Home / 1,231,979.76-1,700,114.14-688,123.28

Finding the Fourth Proportional to 1,231,979.76, 1,700,114.14 and 688,123.28

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Solution

The fourth proportional to 1,231,979.76, 1,700,114.14 and 688,123.28 is: 949,600.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,979.76 : 1,700,114.14 = 688,123.28 : x
  2. Step 2: Convert to fraction form
    1,231,979.76/1,700,114.14 = 688,123.28/x
  3. Step 3: Cross multiply
    1,231,979.76x = 1,700,114.14 × 688,123.28
  4. Step 4: Simplify right side
    1,231,979.76x = 1,169,888,118,391.18
  5. Step 5: Solve for x
    x = 1,169,888,118,391.18/1,231,979.76
  6. Step 6: Final answer
    x = 949,600.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.