Home / 1,272,365-1,755,867.36-728,509.16

Finding the Fourth Proportional to 1,272,365, 1,755,867.36 and 728,509.16

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Solution

The fourth proportional to 1,272,365, 1,755,867.36 and 728,509.16 is: 1,005,344.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,365 : 1,755,867.36 = 728,509.16 : x
  2. Step 2: Convert to fraction form
    1,272,365/1,755,867.36 = 728,509.16/x
  3. Step 3: Cross multiply
    1,272,365x = 1,755,867.36 × 728,509.16
  4. Step 4: Simplify right side
    1,272,365x = 1,279,165,455,505.02
  5. Step 5: Solve for x
    x = 1,279,165,455,505.02/1,272,365
  6. Step 6: Final answer
    x = 1,005,344.74

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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.