Home / 714,964.20-986,667.84-392,681.40

Finding the Fourth Proportional to 714,964.20, 986,667.84 and 392,681.40

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Solution

The fourth proportional to 714,964.20, 986,667.84 and 392,681.40 is: 541,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,964.20 : 986,667.84 = 392,681.40 : x
  2. Step 2: Convert to fraction form
    714,964.20/986,667.84 = 392,681.40/x
  3. Step 3: Cross multiply
    714,964.20x = 986,667.84 × 392,681.40
  4. Step 4: Simplify right side
    714,964.20x = 387,446,108,746.18
  5. Step 5: Solve for x
    x = 387,446,108,746.18/714,964.20
  6. Step 6: Final answer
    x = 541,909.80

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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.