Home / 861,736.80-1,292,605.20-488,488.80

Finding the Fourth Proportional to 861,736.80, 1,292,605.20 and 488,488.80

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Solution

The fourth proportional to 861,736.80, 1,292,605.20 and 488,488.80 is: 732,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,736.80 : 1,292,605.20 = 488,488.80 : x
  2. Step 2: Convert to fraction form
    861,736.80/1,292,605.20 = 488,488.80/x
  3. Step 3: Cross multiply
    861,736.80x = 1,292,605.20 × 488,488.80
  4. Step 4: Simplify right side
    861,736.80x = 631,423,163,021.76
  5. Step 5: Solve for x
    x = 631,423,163,021.76/861,736.80
  6. Step 6: Final answer
    x = 732,733.20

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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.