Home / 827,720.31-1,142,284.11-465,151.35

Finding the Fourth Proportional to 827,720.31, 1,142,284.11 and 465,151.35

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Solution

The fourth proportional to 827,720.31, 1,142,284.11 and 465,151.35 is: 641,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,720.31 : 1,142,284.11 = 465,151.35 : x
  2. Step 2: Convert to fraction form
    827,720.31/1,142,284.11 = 465,151.35/x
  3. Step 3: Cross multiply
    827,720.31x = 1,142,284.11 × 465,151.35
  4. Step 4: Simplify right side
    827,720.31x = 531,334,995,850.05
  5. Step 5: Solve for x
    x = 531,334,995,850.05/827,720.31
  6. Step 6: Final answer
    x = 641,925.77

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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.