Home / 819,665.12-1,131,234.48-457,146.08

Finding the Fourth Proportional to 819,665.12, 1,131,234.48 and 457,146.08

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Solution

The fourth proportional to 819,665.12, 1,131,234.48 and 457,146.08 is: 630,915.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,665.12 : 1,131,234.48 = 457,146.08 : x
  2. Step 2: Convert to fraction form
    819,665.12/1,131,234.48 = 457,146.08/x
  3. Step 3: Cross multiply
    819,665.12x = 1,131,234.48 × 457,146.08
  4. Step 4: Simplify right side
    819,665.12x = 517,139,408,092.84
  5. Step 5: Solve for x
    x = 517,139,408,092.84/819,665.12
  6. Step 6: Final answer
    x = 630,915.47

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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.