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Finding the Fourth Proportional to 615,052.07, 921,711.05 and 290,494.18

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Solution

The fourth proportional to 615,052.07, 921,711.05 and 290,494.18 is: 435,331.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,052.07 : 921,711.05 = 290,494.18 : x
  2. Step 2: Convert to fraction form
    615,052.07/921,711.05 = 290,494.18/x
  3. Step 3: Cross multiply
    615,052.07x = 921,711.05 × 290,494.18
  4. Step 4: Simplify right side
    615,052.07x = 267,751,695,666.69
  5. Step 5: Solve for x
    x = 267,751,695,666.69/615,052.07
  6. Step 6: Final answer
    x = 435,331.75

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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.