Home / 826,000.71-1,139,949.69-458,512.44

Finding the Fourth Proportional to 826,000.71, 1,139,949.69 and 458,512.44

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Solution

The fourth proportional to 826,000.71, 1,139,949.69 and 458,512.44 is: 632,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,000.71 : 1,139,949.69 = 458,512.44 : x
  2. Step 2: Convert to fraction form
    826,000.71/1,139,949.69 = 458,512.44/x
  3. Step 3: Cross multiply
    826,000.71x = 1,139,949.69 × 458,512.44
  4. Step 4: Simplify right side
    826,000.71x = 522,681,113,839.14
  5. Step 5: Solve for x
    x = 522,681,113,839.14/826,000.71
  6. Step 6: Final answer
    x = 632,785.31

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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.