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Finding the Fourth Proportional to 609,931.15, 915,454.20 and 310,618.33

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Solution

The fourth proportional to 609,931.15, 915,454.20 and 310,618.33 is: 466,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,931.15 : 915,454.20 = 310,618.33 : x
  2. Step 2: Convert to fraction form
    609,931.15/915,454.20 = 310,618.33/x
  3. Step 3: Cross multiply
    609,931.15x = 915,454.20 × 310,618.33
  4. Step 4: Simplify right side
    609,931.15x = 284,356,853,671.67
  5. Step 5: Solve for x
    x = 284,356,853,671.67/609,931.15
  6. Step 6: Final answer
    x = 466,211.40

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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.