Home / 881,292.16-1,216,180.20-499,391.74

Finding the Fourth Proportional to 881,292.16, 1,216,180.20 and 499,391.74

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Solution

The fourth proportional to 881,292.16, 1,216,180.20 and 499,391.74 is: 689,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,292.16 : 1,216,180.20 = 499,391.74 : x
  2. Step 2: Convert to fraction form
    881,292.16/1,216,180.20 = 499,391.74/x
  3. Step 3: Cross multiply
    881,292.16x = 1,216,180.20 × 499,391.74
  4. Step 4: Simplify right side
    881,292.16x = 607,350,346,231.55
  5. Step 5: Solve for x
    x = 607,350,346,231.55/881,292.16
  6. Step 6: Final answer
    x = 689,158.91

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1.5x scale

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.