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Finding the Fourth Proportional to 508,919.40, 763,379.10 and 465,616.80

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Solution

The fourth proportional to 508,919.40, 763,379.10 and 465,616.80 is: 698,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,919.40 : 763,379.10 = 465,616.80 : x
  2. Step 2: Convert to fraction form
    508,919.40/763,379.10 = 465,616.80/x
  3. Step 3: Cross multiply
    508,919.40x = 763,379.10 × 465,616.80
  4. Step 4: Simplify right side
    508,919.40x = 355,442,133,728.88
  5. Step 5: Solve for x
    x = 355,442,133,728.88/508,919.40
  6. Step 6: Final answer
    x = 698,425.20

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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.