Home / 694,078.28-957,821.28-388,151.18

Finding the Fourth Proportional to 694,078.28, 957,821.28 and 388,151.18

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Solution

The fourth proportional to 694,078.28, 957,821.28 and 388,151.18 is: 535,644.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,078.28 : 957,821.28 = 388,151.18 : x
  2. Step 2: Convert to fraction form
    694,078.28/957,821.28 = 388,151.18/x
  3. Step 3: Cross multiply
    694,078.28x = 957,821.28 × 388,151.18
  4. Step 4: Simplify right side
    694,078.28x = 371,779,460,061.11
  5. Step 5: Solve for x
    x = 371,779,460,061.11/694,078.28
  6. Step 6: Final answer
    x = 535,644.86

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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.