Home / 689,348.72-951,389.88-387,601.04

Finding the Fourth Proportional to 689,348.72, 951,389.88 and 387,601.04

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Solution

The fourth proportional to 689,348.72, 951,389.88 and 387,601.04 is: 534,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,348.72 : 951,389.88 = 387,601.04 : x
  2. Step 2: Convert to fraction form
    689,348.72/951,389.88 = 387,601.04/x
  3. Step 3: Cross multiply
    689,348.72x = 951,389.88 × 387,601.04
  4. Step 4: Simplify right side
    689,348.72x = 368,759,706,933.48
  5. Step 5: Solve for x
    x = 368,759,706,933.48/689,348.72
  6. Step 6: Final answer
    x = 534,939.28

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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.