Home / 1,105,308.90-1,657,963.35-769,385.70

Finding the Fourth Proportional to 1,105,308.90, 1,657,963.35 and 769,385.70

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Solution

The fourth proportional to 1,105,308.90, 1,657,963.35 and 769,385.70 is: 1,154,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,308.90 : 1,657,963.35 = 769,385.70 : x
  2. Step 2: Convert to fraction form
    1,105,308.90/1,657,963.35 = 769,385.70/x
  3. Step 3: Cross multiply
    1,105,308.90x = 1,657,963.35 × 769,385.70
  4. Step 4: Simplify right side
    1,105,308.90x = 1,275,613,292,614.10
  5. Step 5: Solve for x
    x = 1,275,613,292,614.10/1,105,308.90
  6. Step 6: Final answer
    x = 1,154,078.55

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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.