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Finding the Fourth Proportional to 689,373, 951,334.74 and 387,569.16

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Solution

The fourth proportional to 689,373, 951,334.74 and 387,569.16 is: 534,845.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,373 : 951,334.74 = 387,569.16 : x
  2. Step 2: Convert to fraction form
    689,373/951,334.74 = 387,569.16/x
  3. Step 3: Cross multiply
    689,373x = 951,334.74 × 387,569.16
  4. Step 4: Simplify right side
    689,373x = 368,708,006,060.62
  5. Step 5: Solve for x
    x = 368,708,006,060.62/689,373
  6. Step 6: Final answer
    x = 534,845.44

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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.