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Finding the Fourth Proportional to 1,267,649.02, 1,749,523.20 and 723,661.96

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Solution

The fourth proportional to 1,267,649.02, 1,749,523.20 and 723,661.96 is: 998,749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,649.02 : 1,749,523.20 = 723,661.96 : x
  2. Step 2: Convert to fraction form
    1,267,649.02/1,749,523.20 = 723,661.96/x
  3. Step 3: Cross multiply
    1,267,649.02x = 1,749,523.20 × 723,661.96
  4. Step 4: Simplify right side
    1,267,649.02x = 1,266,063,387,977.47
  5. Step 5: Solve for x
    x = 1,266,063,387,977.47/1,267,649.02
  6. Step 6: Final answer
    x = 998,749.16

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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.