Home / 1,272,440-1,755,929.76-728,557.76

Finding the Fourth Proportional to 1,272,440, 1,755,929.76 and 728,557.76

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Solution

The fourth proportional to 1,272,440, 1,755,929.76 and 728,557.76 is: 1,005,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,440 : 1,755,929.76 = 728,557.76 : x
  2. Step 2: Convert to fraction form
    1,272,440/1,755,929.76 = 728,557.76/x
  3. Step 3: Cross multiply
    1,272,440x = 1,755,929.76 × 728,557.76
  4. Step 4: Simplify right side
    1,272,440x = 1,279,296,252,662.94
  5. Step 5: Solve for x
    x = 1,279,296,252,662.94/1,272,440
  6. Step 6: Final answer
    x = 1,005,388.27

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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.