Home / 779,545.60-1,170,302.55-420,002.80

Finding the Fourth Proportional to 779,545.60, 1,170,302.55 and 420,002.80

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Solution

The fourth proportional to 779,545.60, 1,170,302.55 and 420,002.80 is: 630,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,545.60 : 1,170,302.55 = 420,002.80 : x
  2. Step 2: Convert to fraction form
    779,545.60/1,170,302.55 = 420,002.80/x
  3. Step 3: Cross multiply
    779,545.60x = 1,170,302.55 × 420,002.80
  4. Step 4: Simplify right side
    779,545.60x = 491,530,347,847.14
  5. Step 5: Solve for x
    x = 491,530,347,847.14/779,545.60
  6. Step 6: Final answer
    x = 630,534.44

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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.