Home / 819,719.80-1,131,211.08-457,144.04

Finding the Fourth Proportional to 819,719.80, 1,131,211.08 and 457,144.04

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Solution

The fourth proportional to 819,719.80, 1,131,211.08 and 457,144.04 is: 630,857.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,719.80 : 1,131,211.08 = 457,144.04 : x
  2. Step 2: Convert to fraction form
    819,719.80/1,131,211.08 = 457,144.04/x
  3. Step 3: Cross multiply
    819,719.80x = 1,131,211.08 × 457,144.04
  4. Step 4: Simplify right side
    819,719.80x = 517,126,403,203.96
  5. Step 5: Solve for x
    x = 517,126,403,203.96/819,719.80
  6. Step 6: Final answer
    x = 630,857.52

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Double scale
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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.