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Finding the Fourth Proportional to 615,113.20, 922,669.80 and 447,807.70

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Solution

The fourth proportional to 615,113.20, 922,669.80 and 447,807.70 is: 671,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,113.20 : 922,669.80 = 447,807.70 : x
  2. Step 2: Convert to fraction form
    615,113.20/922,669.80 = 447,807.70/x
  3. Step 3: Cross multiply
    615,113.20x = 922,669.80 × 447,807.70
  4. Step 4: Simplify right side
    615,113.20x = 413,178,640,997.46
  5. Step 5: Solve for x
    x = 413,178,640,997.46/615,113.20
  6. Step 6: Final answer
    x = 671,711.55

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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.