Home / 819,979.60-1,229,386.20-314,345.20

Finding the Fourth Proportional to 819,979.60, 1,229,386.20 and 314,345.20

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Solution

The fourth proportional to 819,979.60, 1,229,386.20 and 314,345.20 is: 471,294.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,979.60 : 1,229,386.20 = 314,345.20 : x
  2. Step 2: Convert to fraction form
    819,979.60/1,229,386.20 = 314,345.20/x
  3. Step 3: Cross multiply
    819,979.60x = 1,229,386.20 × 314,345.20
  4. Step 4: Simplify right side
    819,979.60x = 386,451,650,916.24
  5. Step 5: Solve for x
    x = 386,451,650,916.24/819,979.60
  6. Step 6: Final answer
    x = 471,294.23

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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.