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Finding the Fourth Proportional to 714,744.48, 986,366.16 and 392,475.36

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Solution

The fourth proportional to 714,744.48, 986,366.16 and 392,475.36 is: 541,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,744.48 : 986,366.16 = 392,475.36 : x
  2. Step 2: Convert to fraction form
    714,744.48/986,366.16 = 392,475.36/x
  3. Step 3: Cross multiply
    714,744.48x = 986,366.16 × 392,475.36
  4. Step 4: Simplify right side
    714,744.48x = 387,124,413,737.82
  5. Step 5: Solve for x
    x = 387,124,413,737.82/714,744.48
  6. Step 6: Final answer
    x = 541,626.31

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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.