Home / 1,021,000,247.20-1,531,500,370.80-998,325,431.20

Finding the Fourth Proportional to 1,021,000,247.20, 1,531,500,370.80 and 998,325,431.20

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Solution

The fourth proportional to 1,021,000,247.20, 1,531,500,370.80 and 998,325,431.20 is: 1,497,488,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,000,247.20 : 1,531,500,370.80 = 998,325,431.20 : x
  2. Step 2: Convert to fraction form
    1,021,000,247.20/1,531,500,370.80 = 998,325,431.20/x
  3. Step 3: Cross multiply
    1,021,000,247.20x = 1,531,500,370.80 × 998,325,431.20
  4. Step 4: Simplify right side
    1,021,000,247.20x = 1,528,935,768,061,869,824
  5. Step 5: Solve for x
    x = 1,528,935,768,061,869,824/1,021,000,247.20
  6. Step 6: Final answer
    x = 1,497,488,146.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.