Home / 1,287,102.40-1,930,653.60-1,187,569.60

Finding the Fourth Proportional to 1,287,102.40, 1,930,653.60 and 1,187,569.60

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Solution

The fourth proportional to 1,287,102.40, 1,930,653.60 and 1,187,569.60 is: 1,781,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,102.40 : 1,930,653.60 = 1,187,569.60 : x
  2. Step 2: Convert to fraction form
    1,287,102.40/1,930,653.60 = 1,187,569.60/x
  3. Step 3: Cross multiply
    1,287,102.40x = 1,930,653.60 × 1,187,569.60
  4. Step 4: Simplify right side
    1,287,102.40x = 2,292,785,523,490.56
  5. Step 5: Solve for x
    x = 2,292,785,523,490.56/1,287,102.40
  6. Step 6: Final answer
    x = 1,781,354.40

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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.