Home / 689,486.36-951,482.04-387,680.36

Finding the Fourth Proportional to 689,486.36, 951,482.04 and 387,680.36

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Solution

The fourth proportional to 689,486.36, 951,482.04 and 387,680.36 is: 534,993.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,486.36 : 951,482.04 = 387,680.36 : x
  2. Step 2: Convert to fraction form
    689,486.36/951,482.04 = 387,680.36/x
  3. Step 3: Cross multiply
    689,486.36x = 951,482.04 × 387,680.36
  4. Step 4: Simplify right side
    689,486.36x = 368,870,899,800.73
  5. Step 5: Solve for x
    x = 368,870,899,800.73/689,486.36
  6. Step 6: Final answer
    x = 534,993.76

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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.