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Finding the Fourth Proportional to 615,434.88, 922,806.04 and 423,534.72

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Solution

The fourth proportional to 615,434.88, 922,806.04 and 423,534.72 is: 635,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,434.88 : 922,806.04 = 423,534.72 : x
  2. Step 2: Convert to fraction form
    615,434.88/922,806.04 = 423,534.72/x
  3. Step 3: Cross multiply
    615,434.88x = 922,806.04 × 423,534.72
  4. Step 4: Simplify right side
    615,434.88x = 390,840,397,765.71
  5. Step 5: Solve for x
    x = 390,840,397,765.71/615,434.88
  6. Step 6: Final answer
    x = 635,063.77

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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.