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Finding the Fourth Proportional to 658,355.08, 908,530 and 356,549.08

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Solution

The fourth proportional to 658,355.08, 908,530 and 356,549.08 is: 492,037.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,355.08 : 908,530 = 356,549.08 : x
  2. Step 2: Convert to fraction form
    658,355.08/908,530 = 356,549.08/x
  3. Step 3: Cross multiply
    658,355.08x = 908,530 × 356,549.08
  4. Step 4: Simplify right side
    658,355.08x = 323,935,535,652.40
  5. Step 5: Solve for x
    x = 323,935,535,652.40/658,355.08
  6. Step 6: Final answer
    x = 492,037.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.