Home / 689,120.57-951,006.95-417,238.20

Finding the Fourth Proportional to 689,120.57, 951,006.95 and 417,238.20

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Solution

The fourth proportional to 689,120.57, 951,006.95 and 417,238.20 is: 575,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,120.57 : 951,006.95 = 417,238.20 : x
  2. Step 2: Convert to fraction form
    689,120.57/951,006.95 = 417,238.20/x
  3. Step 3: Cross multiply
    689,120.57x = 951,006.95 × 417,238.20
  4. Step 4: Simplify right side
    689,120.57x = 396,796,425,919.30
  5. Step 5: Solve for x
    x = 396,796,425,919.30/689,120.57
  6. Step 6: Final answer
    x = 575,801.17

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Double scale
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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.