Home / 986,867.80-1,480,301.70-425,902.30

Finding the Fourth Proportional to 986,867.80, 1,480,301.70 and 425,902.30

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Solution

The fourth proportional to 986,867.80, 1,480,301.70 and 425,902.30 is: 638,853.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,867.80 : 1,480,301.70 = 425,902.30 : x
  2. Step 2: Convert to fraction form
    986,867.80/1,480,301.70 = 425,902.30/x
  3. Step 3: Cross multiply
    986,867.80x = 1,480,301.70 × 425,902.30
  4. Step 4: Simplify right side
    986,867.80x = 630,463,898,723.91
  5. Step 5: Solve for x
    x = 630,463,898,723.91/986,867.80
  6. Step 6: Final answer
    x = 638,853.45

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Double scale
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Similar ratio
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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.