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Finding the Fourth Proportional to 520,350.40, 779,618.40 and 239,291.20

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Solution

The fourth proportional to 520,350.40, 779,618.40 and 239,291.20 is: 358,519.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,350.40 : 779,618.40 = 239,291.20 : x
  2. Step 2: Convert to fraction form
    520,350.40/779,618.40 = 239,291.20/x
  3. Step 3: Cross multiply
    520,350.40x = 779,618.40 × 239,291.20
  4. Step 4: Simplify right side
    520,350.40x = 186,555,822,478.08
  5. Step 5: Solve for x
    x = 186,555,822,478.08/520,350.40
  6. Step 6: Final answer
    x = 358,519.61

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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.