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Finding the Fourth Proportional to 1,292,822.40, 1,939,233.60 and 844,924.80

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Solution

The fourth proportional to 1,292,822.40, 1,939,233.60 and 844,924.80 is: 1,267,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,822.40 : 1,939,233.60 = 844,924.80 : x
  2. Step 2: Convert to fraction form
    1,292,822.40/1,939,233.60 = 844,924.80/x
  3. Step 3: Cross multiply
    1,292,822.40x = 1,939,233.60 × 844,924.80
  4. Step 4: Simplify right side
    1,292,822.40x = 1,638,506,561,633.28
  5. Step 5: Solve for x
    x = 1,638,506,561,633.28/1,292,822.40
  6. Step 6: Final answer
    x = 1,267,387.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.