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Finding the Fourth Proportional to 615,370.60, 922,364.70 and 315,735.40

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Solution

The fourth proportional to 615,370.60, 922,364.70 and 315,735.40 is: 473,248.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,370.60 : 922,364.70 = 315,735.40 : x
  2. Step 2: Convert to fraction form
    615,370.60/922,364.70 = 315,735.40/x
  3. Step 3: Cross multiply
    615,370.60x = 922,364.70 × 315,735.40
  4. Step 4: Simplify right side
    615,370.60x = 291,223,187,500.38
  5. Step 5: Solve for x
    x = 291,223,187,500.38/615,370.60
  6. Step 6: Final answer
    x = 473,248.46

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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.