Home / 1,212,818,000.20-1,819,227,000.30-436,488,987.40

Finding the Fourth Proportional to 1,212,818,000.20, 1,819,227,000.30 and 436,488,987.40

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Solution

The fourth proportional to 1,212,818,000.20, 1,819,227,000.30 and 436,488,987.40 is: 654,733,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,818,000.20 : 1,819,227,000.30 = 436,488,987.40 : x
  2. Step 2: Convert to fraction form
    1,212,818,000.20/1,819,227,000.30 = 436,488,987.40/x
  3. Step 3: Cross multiply
    1,212,818,000.20x = 1,819,227,000.30 × 436,488,987.40
  4. Step 4: Simplify right side
    1,212,818,000.20x = 794,072,551,211,686,400
  5. Step 5: Solve for x
    x = 794,072,551,211,686,400/1,212,818,000.20
  6. Step 6: Final answer
    x = 654,733,481.10

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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.