Home / 423,079.20-634,647.60-123,559.20

Finding the Fourth Proportional to 423,079.20, 634,647.60 and 123,559.20

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Solution

The fourth proportional to 423,079.20, 634,647.60 and 123,559.20 is: 185,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,079.20 : 634,647.60 = 123,559.20 : x
  2. Step 2: Convert to fraction form
    423,079.20/634,647.60 = 123,559.20/x
  3. Step 3: Cross multiply
    423,079.20x = 634,647.60 × 123,559.20
  4. Step 4: Simplify right side
    423,079.20x = 78,416,549,737.92
  5. Step 5: Solve for x
    x = 78,416,549,737.92/423,079.20
  6. Step 6: Final answer
    x = 185,347.21

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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.