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Finding the Fourth Proportional to 610,620.12, 842,655.96 and 342,348.12

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Solution

The fourth proportional to 610,620.12, 842,655.96 and 342,348.12 is: 472,440.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,620.12 : 842,655.96 = 342,348.12 : x
  2. Step 2: Convert to fraction form
    610,620.12/842,655.96 = 342,348.12/x
  3. Step 3: Cross multiply
    610,620.12x = 842,655.96 × 342,348.12
  4. Step 4: Simplify right side
    610,620.12x = 288,481,683,712.80
  5. Step 5: Solve for x
    x = 288,481,683,712.80/610,620.12
  6. Step 6: Final answer
    x = 472,440.51

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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.