Home / 689,368.72-951,417.48-387,621.04

Finding the Fourth Proportional to 689,368.72, 951,417.48 and 387,621.04

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Solution

The fourth proportional to 689,368.72, 951,417.48 and 387,621.04 is: 534,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,368.72 : 951,417.48 = 387,621.04 : x
  2. Step 2: Convert to fraction form
    689,368.72/951,417.48 = 387,621.04/x
  3. Step 3: Cross multiply
    689,368.72x = 951,417.48 × 387,621.04
  4. Step 4: Simplify right side
    689,368.72x = 368,789,433,071.78
  5. Step 5: Solve for x
    x = 368,789,433,071.78/689,368.72
  6. Step 6: Final answer
    x = 534,966.88

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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.