Home / 679,182.64-937,217.24-392,721.28

Finding the Fourth Proportional to 679,182.64, 937,217.24 and 392,721.28

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Solution

The fourth proportional to 679,182.64, 937,217.24 and 392,721.28 is: 541,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,182.64 : 937,217.24 = 392,721.28 : x
  2. Step 2: Convert to fraction form
    679,182.64/937,217.24 = 392,721.28/x
  3. Step 3: Cross multiply
    679,182.64x = 937,217.24 × 392,721.28
  4. Step 4: Simplify right side
    679,182.64x = 368,065,154,130.87
  5. Step 5: Solve for x
    x = 368,065,154,130.87/679,182.64
  6. Step 6: Final answer
    x = 541,923.68

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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.