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Finding the Fourth Proportional to 659,350.84, 910,020.68 and 387,418.68

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Solution

The fourth proportional to 659,350.84, 910,020.68 and 387,418.68 is: 534,706.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,350.84 : 910,020.68 = 387,418.68 : x
  2. Step 2: Convert to fraction form
    659,350.84/910,020.68 = 387,418.68/x
  3. Step 3: Cross multiply
    659,350.84x = 910,020.68 × 387,418.68
  4. Step 4: Simplify right side
    659,350.84x = 352,559,010,618.30
  5. Step 5: Solve for x
    x = 352,559,010,618.30/659,350.84
  6. Step 6: Final answer
    x = 534,706.24

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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.