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Finding the Fourth Proportional to 518,517.70, 777,776.55 and 483,088.30

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Solution

The fourth proportional to 518,517.70, 777,776.55 and 483,088.30 is: 724,632.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,517.70 : 777,776.55 = 483,088.30 : x
  2. Step 2: Convert to fraction form
    518,517.70/777,776.55 = 483,088.30/x
  3. Step 3: Cross multiply
    518,517.70x = 777,776.55 × 483,088.30
  4. Step 4: Simplify right side
    518,517.70x = 375,734,751,319.37
  5. Step 5: Solve for x
    x = 375,734,751,319.37/518,517.70
  6. Step 6: Final answer
    x = 724,632.45

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Double scale
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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.