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Finding the Fourth Proportional to 542,578.68, 748,605.86 and 427,500.56

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Solution

The fourth proportional to 542,578.68, 748,605.86 and 427,500.56 is: 589,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,578.68 : 748,605.86 = 427,500.56 : x
  2. Step 2: Convert to fraction form
    542,578.68/748,605.86 = 427,500.56/x
  3. Step 3: Cross multiply
    542,578.68x = 748,605.86 × 427,500.56
  4. Step 4: Simplify right side
    542,578.68x = 320,029,424,369.28
  5. Step 5: Solve for x
    x = 320,029,424,369.28/542,578.68
  6. Step 6: Final answer
    x = 589,830.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.