Home / 641,942.06-886,802.78-512,710.86

Finding the Fourth Proportional to 641,942.06, 886,802.78 and 512,710.86

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Solution

The fourth proportional to 641,942.06, 886,802.78 and 512,710.86 is: 708,277.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,942.06 : 886,802.78 = 512,710.86 : x
  2. Step 2: Convert to fraction form
    641,942.06/886,802.78 = 512,710.86/x
  3. Step 3: Cross multiply
    641,942.06x = 886,802.78 × 512,710.86
  4. Step 4: Simplify right side
    641,942.06x = 454,673,417,265.97
  5. Step 5: Solve for x
    x = 454,673,417,265.97/641,942.06
  6. Step 6: Final answer
    x = 708,277.96

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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.