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Finding the Fourth Proportional to 614,447.76, 847,987.20 and 342,604.20

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Solution

The fourth proportional to 614,447.76, 847,987.20 and 342,604.20 is: 472,821.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,447.76 : 847,987.20 = 342,604.20 : x
  2. Step 2: Convert to fraction form
    614,447.76/847,987.20 = 342,604.20/x
  3. Step 3: Cross multiply
    614,447.76x = 847,987.20 × 342,604.20
  4. Step 4: Simplify right side
    614,447.76x = 290,523,976,266.24
  5. Step 5: Solve for x
    x = 290,523,976,266.24/614,447.76
  6. Step 6: Final answer
    x = 472,821.28

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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.