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Finding the Fourth Proportional to 625,987.92, 863,730.36 and 371,421.84

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Solution

The fourth proportional to 625,987.92, 863,730.36 and 371,421.84 is: 512,483.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,987.92 : 863,730.36 = 371,421.84 : x
  2. Step 2: Convert to fraction form
    625,987.92/863,730.36 = 371,421.84/x
  3. Step 3: Cross multiply
    625,987.92x = 863,730.36 × 371,421.84
  4. Step 4: Simplify right side
    625,987.92x = 320,808,319,575.06
  5. Step 5: Solve for x
    x = 320,808,319,575.06/625,987.92
  6. Step 6: Final answer
    x = 512,483.24

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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.