Home / 651,507.20-977,260.80-429,891.20

Finding the Fourth Proportional to 651,507.20, 977,260.80 and 429,891.20

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Solution

The fourth proportional to 651,507.20, 977,260.80 and 429,891.20 is: 644,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,507.20 : 977,260.80 = 429,891.20 : x
  2. Step 2: Convert to fraction form
    651,507.20/977,260.80 = 429,891.20/x
  3. Step 3: Cross multiply
    651,507.20x = 977,260.80 × 429,891.20
  4. Step 4: Simplify right side
    651,507.20x = 420,115,818,024.96
  5. Step 5: Solve for x
    x = 420,115,818,024.96/651,507.20
  6. Step 6: Final answer
    x = 644,836.80

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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.