Home / 804,741.20-1,207,111.80-431,493.20

Finding the Fourth Proportional to 804,741.20, 1,207,111.80 and 431,493.20

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Solution

The fourth proportional to 804,741.20, 1,207,111.80 and 431,493.20 is: 647,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,741.20 : 1,207,111.80 = 431,493.20 : x
  2. Step 2: Convert to fraction form
    804,741.20/1,207,111.80 = 431,493.20/x
  3. Step 3: Cross multiply
    804,741.20x = 1,207,111.80 × 431,493.20
  4. Step 4: Simplify right side
    804,741.20x = 520,860,533,339.76
  5. Step 5: Solve for x
    x = 520,860,533,339.76/804,741.20
  6. Step 6: Final answer
    x = 647,239.80

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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.