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Finding the Fourth Proportional to 714,963.20, 986,792.42 and 424,735.98

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Solution

The fourth proportional to 714,963.20, 986,792.42 and 424,735.98 is: 586,220.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,963.20 : 986,792.42 = 424,735.98 : x
  2. Step 2: Convert to fraction form
    714,963.20/986,792.42 = 424,735.98/x
  3. Step 3: Cross multiply
    714,963.20x = 986,792.42 × 424,735.98
  4. Step 4: Simplify right side
    714,963.20x = 419,126,245,565.27
  5. Step 5: Solve for x
    x = 419,126,245,565.27/714,963.20
  6. Step 6: Final answer
    x = 586,220.73

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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.