Home / 838,982.71-1,157,763.48-512,841.78

Finding the Fourth Proportional to 838,982.71, 1,157,763.48 and 512,841.78

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Solution

The fourth proportional to 838,982.71, 1,157,763.48 and 512,841.78 is: 707,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,982.71 : 1,157,763.48 = 512,841.78 : x
  2. Step 2: Convert to fraction form
    838,982.71/1,157,763.48 = 512,841.78/x
  3. Step 3: Cross multiply
    838,982.71x = 1,157,763.48 × 512,841.78
  4. Step 4: Simplify right side
    838,982.71x = 593,749,481,979.04
  5. Step 5: Solve for x
    x = 593,749,481,979.04/838,982.71
  6. Step 6: Final answer
    x = 707,701.69

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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.