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Finding the Fourth Proportional to 661,995.90, 993,123.45 and 282,915.90

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Solution

The fourth proportional to 661,995.90, 993,123.45 and 282,915.90 is: 424,429.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,995.90 : 993,123.45 = 282,915.90 : x
  2. Step 2: Convert to fraction form
    661,995.90/993,123.45 = 282,915.90/x
  3. Step 3: Cross multiply
    661,995.90x = 993,123.45 × 282,915.90
  4. Step 4: Simplify right side
    661,995.90x = 280,970,414,667.86
  5. Step 5: Solve for x
    x = 280,970,414,667.86/661,995.90
  6. Step 6: Final answer
    x = 424,429.24

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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.