Home / 822,135.78-1,232,456.28-316,374.24

Finding the Fourth Proportional to 822,135.78, 1,232,456.28 and 316,374.24

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Solution

The fourth proportional to 822,135.78, 1,232,456.28 and 316,374.24 is: 474,273.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,135.78 : 1,232,456.28 = 316,374.24 : x
  2. Step 2: Convert to fraction form
    822,135.78/1,232,456.28 = 316,374.24/x
  3. Step 3: Cross multiply
    822,135.78x = 1,232,456.28 × 316,374.24
  4. Step 4: Simplify right side
    822,135.78x = 389,917,418,918.23
  5. Step 5: Solve for x
    x = 389,917,418,918.23/822,135.78
  6. Step 6: Final answer
    x = 474,273.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.