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Finding the Fourth Proportional to 615,387.60, 922,855.92 and 260,429.28

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Solution

The fourth proportional to 615,387.60, 922,855.92 and 260,429.28 is: 390,548.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,387.60 : 922,855.92 = 260,429.28 : x
  2. Step 2: Convert to fraction form
    615,387.60/922,855.92 = 260,429.28/x
  3. Step 3: Cross multiply
    615,387.60x = 922,855.92 × 260,429.28
  4. Step 4: Simplify right side
    615,387.60x = 240,338,702,789.34
  5. Step 5: Solve for x
    x = 240,338,702,789.34/615,387.60
  6. Step 6: Final answer
    x = 390,548.50

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1.5x scale

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.