Home / 1,221,569.28-1,685,775.77-677,740.75

Finding the Fourth Proportional to 1,221,569.28, 1,685,775.77 and 677,740.75

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Solution

The fourth proportional to 1,221,569.28, 1,685,775.77 and 677,740.75 is: 935,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,569.28 : 1,685,775.77 = 677,740.75 : x
  2. Step 2: Convert to fraction form
    1,221,569.28/1,685,775.77 = 677,740.75/x
  3. Step 3: Cross multiply
    1,221,569.28x = 1,685,775.77 × 677,740.75
  4. Step 4: Simplify right side
    1,221,569.28x = 1,142,518,934,691.63
  5. Step 5: Solve for x
    x = 1,142,518,934,691.63/1,221,569.28
  6. Step 6: Final answer
    x = 935,287.87

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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.