Home / 386,934.80-580,402.20-292,456.40

Finding the Fourth Proportional to 386,934.80, 580,402.20 and 292,456.40

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Solution

The fourth proportional to 386,934.80, 580,402.20 and 292,456.40 is: 438,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,934.80 : 580,402.20 = 292,456.40 : x
  2. Step 2: Convert to fraction form
    386,934.80/580,402.20 = 292,456.40/x
  3. Step 3: Cross multiply
    386,934.80x = 580,402.20 × 292,456.40
  4. Step 4: Simplify right side
    386,934.80x = 169,742,337,964.08
  5. Step 5: Solve for x
    x = 169,742,337,964.08/386,934.80
  6. Step 6: Final answer
    x = 438,684.60

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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.