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Finding the Fourth Proportional to 615,111.20, 922,666.80 and 447,805.70

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Solution

The fourth proportional to 615,111.20, 922,666.80 and 447,805.70 is: 671,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,111.20 : 922,666.80 = 447,805.70 : x
  2. Step 2: Convert to fraction form
    615,111.20/922,666.80 = 447,805.70/x
  3. Step 3: Cross multiply
    615,111.20x = 922,666.80 × 447,805.70
  4. Step 4: Simplify right side
    615,111.20x = 413,175,452,240.76
  5. Step 5: Solve for x
    x = 413,175,452,240.76/615,111.20
  6. Step 6: Final answer
    x = 671,708.55

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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.