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Finding the Fourth Proportional to 1,272,363, 1,755,864.60 and 728,507.16

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Solution

The fourth proportional to 1,272,363, 1,755,864.60 and 728,507.16 is: 1,005,341.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,363 : 1,755,864.60 = 728,507.16 : x
  2. Step 2: Convert to fraction form
    1,272,363/1,755,864.60 = 728,507.16/x
  3. Step 3: Cross multiply
    1,272,363x = 1,755,864.60 × 728,507.16
  4. Step 4: Simplify right side
    1,272,363x = 1,279,159,933,090.54
  5. Step 5: Solve for x
    x = 1,279,159,933,090.54/1,272,363
  6. Step 6: Final answer
    x = 1,005,341.98

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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.