Home / 1,838,458.80-2,760,640.65-1,389,686.40

Finding the Fourth Proportional to 1,838,458.80, 2,760,640.65 and 1,389,686.40

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Solution

The fourth proportional to 1,838,458.80, 2,760,640.65 and 1,389,686.40 is: 2,086,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838,458.80 : 2,760,640.65 = 1,389,686.40 : x
  2. Step 2: Convert to fraction form
    1,838,458.80/2,760,640.65 = 1,389,686.40/x
  3. Step 3: Cross multiply
    1,838,458.80x = 2,760,640.65 × 1,389,686.40
  4. Step 4: Simplify right side
    1,838,458.80x = 3,836,424,766,592.16
  5. Step 5: Solve for x
    x = 3,836,424,766,592.16/1,838,458.80
  6. Step 6: Final answer
    x = 2,086,761.35

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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.