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Finding the Fourth Proportional to 658,443.49, 908,646.33 and 356,637.49

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Solution

The fourth proportional to 658,443.49, 908,646.33 and 356,637.49 is: 492,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,443.49 : 908,646.33 = 356,637.49 : x
  2. Step 2: Convert to fraction form
    658,443.49/908,646.33 = 356,637.49/x
  3. Step 3: Cross multiply
    658,443.49x = 908,646.33 × 356,637.49
  4. Step 4: Simplify right side
    658,443.49x = 324,057,346,428.91
  5. Step 5: Solve for x
    x = 324,057,346,428.91/658,443.49
  6. Step 6: Final answer
    x = 492,156.66

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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.