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Finding the Fourth Proportional to 615,109.20, 922,663.80 and 447,803.70

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Solution

The fourth proportional to 615,109.20, 922,663.80 and 447,803.70 is: 671,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,109.20 : 922,663.80 = 447,803.70 : x
  2. Step 2: Convert to fraction form
    615,109.20/922,663.80 = 447,803.70/x
  3. Step 3: Cross multiply
    615,109.20x = 922,663.80 × 447,803.70
  4. Step 4: Simplify right side
    615,109.20x = 413,172,263,496.06
  5. Step 5: Solve for x
    x = 413,172,263,496.06/615,109.20
  6. Step 6: Final answer
    x = 671,705.55

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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.