Home / 881,065.60-1,215,831.28-499,084.64

Finding the Fourth Proportional to 881,065.60, 1,215,831.28 and 499,084.64

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Solution

The fourth proportional to 881,065.60, 1,215,831.28 and 499,084.64 is: 688,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,065.60 : 1,215,831.28 = 499,084.64 : x
  2. Step 2: Convert to fraction form
    881,065.60/1,215,831.28 = 499,084.64/x
  3. Step 3: Cross multiply
    881,065.60x = 1,215,831.28 × 499,084.64
  4. Step 4: Simplify right side
    881,065.60x = 606,802,716,679.54
  5. Step 5: Solve for x
    x = 606,802,716,679.54/881,065.60
  6. Step 6: Final answer
    x = 688,714.57

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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.