Home / 714,712.02-986,318.49-392,423.40

Finding the Fourth Proportional to 714,712.02, 986,318.49 and 392,423.40

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Solution

The fourth proportional to 714,712.02, 986,318.49 and 392,423.40 is: 541,553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,712.02 : 986,318.49 = 392,423.40 : x
  2. Step 2: Convert to fraction form
    714,712.02/986,318.49 = 392,423.40/x
  3. Step 3: Cross multiply
    714,712.02x = 986,318.49 × 392,423.40
  4. Step 4: Simplify right side
    714,712.02x = 387,054,455,328.67
  5. Step 5: Solve for x
    x = 387,054,455,328.67/714,712.02
  6. Step 6: Final answer
    x = 541,553.02

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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.