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Finding the Fourth Proportional to 720,817.72, 993,583.22 and 567,612.84

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Solution

The fourth proportional to 720,817.72, 993,583.22 and 567,612.84 is: 782,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,817.72 : 993,583.22 = 567,612.84 : x
  2. Step 2: Convert to fraction form
    720,817.72/993,583.22 = 567,612.84/x
  3. Step 3: Cross multiply
    720,817.72x = 993,583.22 × 567,612.84
  4. Step 4: Simplify right side
    720,817.72x = 563,970,593,280.55
  5. Step 5: Solve for x
    x = 563,970,593,280.55/720,817.72
  6. Step 6: Final answer
    x = 782,403.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.