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Finding the Fourth Proportional to 519,765.20, 779,647.80 and 360,332.90

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Solution

The fourth proportional to 519,765.20, 779,647.80 and 360,332.90 is: 540,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,765.20 : 779,647.80 = 360,332.90 : x
  2. Step 2: Convert to fraction form
    519,765.20/779,647.80 = 360,332.90/x
  3. Step 3: Cross multiply
    519,765.20x = 779,647.80 × 360,332.90
  4. Step 4: Simplify right side
    519,765.20x = 280,932,752,752.62
  5. Step 5: Solve for x
    x = 280,932,752,752.62/519,765.20
  6. Step 6: Final answer
    x = 540,499.35

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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.