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Finding the Fourth Proportional to 671,956.80, 1,005,602.40 and 615,969.60

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Solution

The fourth proportional to 671,956.80, 1,005,602.40 and 615,969.60 is: 921,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,956.80 : 1,005,602.40 = 615,969.60 : x
  2. Step 2: Convert to fraction form
    671,956.80/1,005,602.40 = 615,969.60/x
  3. Step 3: Cross multiply
    671,956.80x = 1,005,602.40 × 615,969.60
  4. Step 4: Simplify right side
    671,956.80x = 619,420,508,087.04
  5. Step 5: Solve for x
    x = 619,420,508,087.04/671,956.80
  6. Step 6: Final answer
    x = 921,815.97

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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.