Home / 825,436.80-1,238,155.20-542,001.60

Finding the Fourth Proportional to 825,436.80, 1,238,155.20 and 542,001.60

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Solution

The fourth proportional to 825,436.80, 1,238,155.20 and 542,001.60 is: 813,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,436.80 : 1,238,155.20 = 542,001.60 : x
  2. Step 2: Convert to fraction form
    825,436.80/1,238,155.20 = 542,001.60/x
  3. Step 3: Cross multiply
    825,436.80x = 1,238,155.20 × 542,001.60
  4. Step 4: Simplify right side
    825,436.80x = 671,082,099,448.32
  5. Step 5: Solve for x
    x = 671,082,099,448.32/825,436.80
  6. Step 6: Final answer
    x = 813,002.40

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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.