Home / 664,442.36-916,822.32-392,472.52

Finding the Fourth Proportional to 664,442.36, 916,822.32 and 392,472.52

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Solution

The fourth proportional to 664,442.36, 916,822.32 and 392,472.52 is: 541,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,442.36 : 916,822.32 = 392,472.52 : x
  2. Step 2: Convert to fraction form
    664,442.36/916,822.32 = 392,472.52/x
  3. Step 3: Cross multiply
    664,442.36x = 916,822.32 × 392,472.52
  4. Step 4: Simplify right side
    664,442.36x = 359,827,566,322.65
  5. Step 5: Solve for x
    x = 359,827,566,322.65/664,442.36
  6. Step 6: Final answer
    x = 541,548.20

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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.