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Finding the Fourth Proportional to 521,414.25, 719,551.67 and 282,950.25

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Solution

The fourth proportional to 521,414.25, 719,551.67 and 282,950.25 is: 390,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,414.25 : 719,551.67 = 282,950.25 : x
  2. Step 2: Convert to fraction form
    521,414.25/719,551.67 = 282,950.25/x
  3. Step 3: Cross multiply
    521,414.25x = 719,551.67 × 282,950.25
  4. Step 4: Simplify right side
    521,414.25x = 203,597,323,499.67
  5. Step 5: Solve for x
    x = 203,597,323,499.67/521,414.25
  6. Step 6: Final answer
    x = 390,471.35

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.