Home / 689,350.72-951,392.64-387,603.04

Finding the Fourth Proportional to 689,350.72, 951,392.64 and 387,603.04

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Solution

The fourth proportional to 689,350.72, 951,392.64 and 387,603.04 is: 534,942.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,350.72 : 951,392.64 = 387,603.04 : x
  2. Step 2: Convert to fraction form
    689,350.72/951,392.64 = 387,603.04/x
  3. Step 3: Cross multiply
    689,350.72x = 951,392.64 × 387,603.04
  4. Step 4: Simplify right side
    689,350.72x = 368,762,679,497.63
  5. Step 5: Solve for x
    x = 368,762,679,497.63/689,350.72
  6. Step 6: Final answer
    x = 534,942.04

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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.