Home / 815,291.68-1,222,004.40-316,228

Finding the Fourth Proportional to 815,291.68, 1,222,004.40 and 316,228

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Solution

The fourth proportional to 815,291.68, 1,222,004.40 and 316,228 is: 473,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,291.68 : 1,222,004.40 = 316,228 : x
  2. Step 2: Convert to fraction form
    815,291.68/1,222,004.40 = 316,228/x
  3. Step 3: Cross multiply
    815,291.68x = 1,222,004.40 × 316,228
  4. Step 4: Simplify right side
    815,291.68x = 386,432,007,403.20
  5. Step 5: Solve for x
    x = 386,432,007,403.20/815,291.68
  6. Step 6: Final answer
    x = 473,980.07

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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.