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Finding the Fourth Proportional to 477,965.80, 716,948.70 and 403,316.20

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Solution

The fourth proportional to 477,965.80, 716,948.70 and 403,316.20 is: 604,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,965.80 : 716,948.70 = 403,316.20 : x
  2. Step 2: Convert to fraction form
    477,965.80/716,948.70 = 403,316.20/x
  3. Step 3: Cross multiply
    477,965.80x = 716,948.70 × 403,316.20
  4. Step 4: Simplify right side
    477,965.80x = 289,157,025,278.94
  5. Step 5: Solve for x
    x = 289,157,025,278.94/477,965.80
  6. Step 6: Final answer
    x = 604,974.30

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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.