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Finding the Fourth Proportional to 1,361,358.80, 1,878,169.80 and 1,359,259.28

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Solution

The fourth proportional to 1,361,358.80, 1,878,169.80 and 1,359,259.28 is: 1,875,273.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,358.80 : 1,878,169.80 = 1,359,259.28 : x
  2. Step 2: Convert to fraction form
    1,361,358.80/1,878,169.80 = 1,359,259.28/x
  3. Step 3: Cross multiply
    1,361,358.80x = 1,878,169.80 × 1,359,259.28
  4. Step 4: Simplify right side
    1,361,358.80x = 2,552,919,730,065.74
  5. Step 5: Solve for x
    x = 2,552,919,730,065.74/1,361,358.80
  6. Step 6: Final answer
    x = 1,875,273.24

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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.