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Finding the Fourth Proportional to 561,991.72, 775,532.85 and 307,337.44

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Solution

The fourth proportional to 561,991.72, 775,532.85 and 307,337.44 is: 424,117.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,991.72 : 775,532.85 = 307,337.44 : x
  2. Step 2: Convert to fraction form
    561,991.72/775,532.85 = 307,337.44/x
  3. Step 3: Cross multiply
    561,991.72x = 775,532.85 × 307,337.44
  4. Step 4: Simplify right side
    561,991.72x = 238,350,280,754.90
  5. Step 5: Solve for x
    x = 238,350,280,754.90/561,991.72
  6. Step 6: Final answer
    x = 424,117.07

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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.