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Finding the Fourth Proportional to 500,893.76, 691,315.20 and 372,683.61

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Solution

The fourth proportional to 500,893.76, 691,315.20 and 372,683.61 is: 514,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,893.76 : 691,315.20 = 372,683.61 : x
  2. Step 2: Convert to fraction form
    500,893.76/691,315.20 = 372,683.61/x
  3. Step 3: Cross multiply
    500,893.76x = 691,315.20 × 372,683.61
  4. Step 4: Simplify right side
    500,893.76x = 257,641,844,383.87
  5. Step 5: Solve for x
    x = 257,641,844,383.87/500,893.76
  6. Step 6: Final answer
    x = 514,364.26

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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.