Home / 426,425.20-639,636.54-173,646.16

Finding the Fourth Proportional to 426,425.20, 639,636.54 and 173,646.16

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Solution

The fourth proportional to 426,425.20, 639,636.54 and 173,646.16 is: 260,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,425.20 : 639,636.54 = 173,646.16 : x
  2. Step 2: Convert to fraction form
    426,425.20/639,636.54 = 173,646.16/x
  3. Step 3: Cross multiply
    426,425.20x = 639,636.54 × 173,646.16
  4. Step 4: Simplify right side
    426,425.20x = 111,070,428,966.69
  5. Step 5: Solve for x
    x = 111,070,428,966.69/426,425.20
  6. Step 6: Final answer
    x = 260,468.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.