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Finding the Fourth Proportional to 521,123.94, 780,827.30 and 477,545.94

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Solution

The fourth proportional to 521,123.94, 780,827.30 and 477,545.94 is: 715,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,123.94 : 780,827.30 = 477,545.94 : x
  2. Step 2: Convert to fraction form
    521,123.94/780,827.30 = 477,545.94/x
  3. Step 3: Cross multiply
    521,123.94x = 780,827.30 × 477,545.94
  4. Step 4: Simplify right side
    521,123.94x = 372,880,906,956.16
  5. Step 5: Solve for x
    x = 372,880,906,956.16/521,123.94
  6. Step 6: Final answer
    x = 715,532.10

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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.