Home / 1,287,542.40-1,931,659.20-1,148,265.60

Finding the Fourth Proportional to 1,287,542.40, 1,931,659.20 and 1,148,265.60

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Solution

The fourth proportional to 1,287,542.40, 1,931,659.20 and 1,148,265.60 is: 1,722,706.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,542.40 : 1,931,659.20 = 1,148,265.60 : x
  2. Step 2: Convert to fraction form
    1,287,542.40/1,931,659.20 = 1,148,265.60/x
  3. Step 3: Cross multiply
    1,287,542.40x = 1,931,659.20 × 1,148,265.60
  4. Step 4: Simplify right side
    1,287,542.40x = 2,218,057,810,283.52
  5. Step 5: Solve for x
    x = 2,218,057,810,283.52/1,287,542.40
  6. Step 6: Final answer
    x = 1,722,706.62

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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.