Home / 986,680.40-1,479,761.28-425,590.16

Finding the Fourth Proportional to 986,680.40, 1,479,761.28 and 425,590.16

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Solution

The fourth proportional to 986,680.40, 1,479,761.28 and 425,590.16 is: 638,273.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,680.40 : 1,479,761.28 = 425,590.16 : x
  2. Step 2: Convert to fraction form
    986,680.40/1,479,761.28 = 425,590.16/x
  3. Step 3: Cross multiply
    986,680.40x = 1,479,761.28 × 425,590.16
  4. Step 4: Simplify right side
    986,680.40x = 629,771,839,917.01
  5. Step 5: Solve for x
    x = 629,771,839,917.01/986,680.40
  6. Step 6: Final answer
    x = 638,273.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.