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Finding the Fourth Proportional to 478,975.80, 718,463.70 and 425,062.20

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Solution

The fourth proportional to 478,975.80, 718,463.70 and 425,062.20 is: 637,593.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,975.80 : 718,463.70 = 425,062.20 : x
  2. Step 2: Convert to fraction form
    478,975.80/718,463.70 = 425,062.20/x
  3. Step 3: Cross multiply
    478,975.80x = 718,463.70 × 425,062.20
  4. Step 4: Simplify right side
    478,975.80x = 305,391,760,942.14
  5. Step 5: Solve for x
    x = 305,391,760,942.14/478,975.80
  6. Step 6: Final answer
    x = 637,593.30

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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.