Home / 865,615.20-1,298,422.80-655,663.20

Finding the Fourth Proportional to 865,615.20, 1,298,422.80 and 655,663.20

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Solution

The fourth proportional to 865,615.20, 1,298,422.80 and 655,663.20 is: 983,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,615.20 : 1,298,422.80 = 655,663.20 : x
  2. Step 2: Convert to fraction form
    865,615.20/1,298,422.80 = 655,663.20/x
  3. Step 3: Cross multiply
    865,615.20x = 1,298,422.80 × 655,663.20
  4. Step 4: Simplify right side
    865,615.20x = 851,328,048,000.96
  5. Step 5: Solve for x
    x = 851,328,048,000.96/865,615.20
  6. Step 6: Final answer
    x = 983,494.80

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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.