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Finding the Fourth Proportional to 615,110.70, 922,666.05 and 447,805.20

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Solution

The fourth proportional to 615,110.70, 922,666.05 and 447,805.20 is: 671,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,110.70 : 922,666.05 = 447,805.20 : x
  2. Step 2: Convert to fraction form
    615,110.70/922,666.05 = 447,805.20/x
  3. Step 3: Cross multiply
    615,110.70x = 922,666.05 × 447,805.20
  4. Step 4: Simplify right side
    615,110.70x = 413,174,655,053.46
  5. Step 5: Solve for x
    x = 413,174,655,053.46/615,110.70
  6. Step 6: Final answer
    x = 671,707.80

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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.