Home / 1,287,845.92-1,930,981.56-614,133.28

Finding the Fourth Proportional to 1,287,845.92, 1,930,981.56 and 614,133.28

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Solution

The fourth proportional to 1,287,845.92, 1,930,981.56 and 614,133.28 is: 920,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,845.92 : 1,930,981.56 = 614,133.28 : x
  2. Step 2: Convert to fraction form
    1,287,845.92/1,930,981.56 = 614,133.28/x
  3. Step 3: Cross multiply
    1,287,845.92x = 1,930,981.56 × 614,133.28
  4. Step 4: Simplify right side
    1,287,845.92x = 1,185,880,039,062.32
  5. Step 5: Solve for x
    x = 1,185,880,039,062.32/1,287,845.92
  6. Step 6: Final answer
    x = 920,824.47

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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.