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Finding the Fourth Proportional to 658,618.71, 908,894.75 and 356,812.71

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Solution

The fourth proportional to 658,618.71, 908,894.75 and 356,812.71 is: 492,402.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,618.71 : 908,894.75 = 356,812.71 : x
  2. Step 2: Convert to fraction form
    658,618.71/908,894.75 = 356,812.71/x
  3. Step 3: Cross multiply
    658,618.71x = 908,894.75 × 356,812.71
  4. Step 4: Simplify right side
    658,618.71x = 324,305,197,068.21
  5. Step 5: Solve for x
    x = 324,305,197,068.21/658,618.71
  6. Step 6: Final answer
    x = 492,402.04

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1.5x scale

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.