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Finding the Fourth Proportional to 472,781.80, 709,172.70 and 434,074.60

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Solution

The fourth proportional to 472,781.80, 709,172.70 and 434,074.60 is: 651,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,781.80 : 709,172.70 = 434,074.60 : x
  2. Step 2: Convert to fraction form
    472,781.80/709,172.70 = 434,074.60/x
  3. Step 3: Cross multiply
    472,781.80x = 709,172.70 × 434,074.60
  4. Step 4: Simplify right side
    472,781.80x = 307,833,856,083.42
  5. Step 5: Solve for x
    x = 307,833,856,083.42/472,781.80
  6. Step 6: Final answer
    x = 651,111.90

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Similar ratio
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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.