Home / 1,272,355.63-1,755,854.41-728,499.76

Finding the Fourth Proportional to 1,272,355.63, 1,755,854.41 and 728,499.76

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Solution

The fourth proportional to 1,272,355.63, 1,755,854.41 and 728,499.76 is: 1,005,331.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,355.63 : 1,755,854.41 = 728,499.76 : x
  2. Step 2: Convert to fraction form
    1,272,355.63/1,755,854.41 = 728,499.76/x
  3. Step 3: Cross multiply
    1,272,355.63x = 1,755,854.41 × 728,499.76
  4. Step 4: Simplify right side
    1,272,355.63x = 1,279,139,516,279.94
  5. Step 5: Solve for x
    x = 1,279,139,516,279.94/1,272,355.63
  6. Step 6: Final answer
    x = 1,005,331.75

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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.