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Finding the Fourth Proportional to 408,074.10, 612,111.15 and 347,712.90

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Solution

The fourth proportional to 408,074.10, 612,111.15 and 347,712.90 is: 521,569.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,074.10 : 612,111.15 = 347,712.90 : x
  2. Step 2: Convert to fraction form
    408,074.10/612,111.15 = 347,712.90/x
  3. Step 3: Cross multiply
    408,074.10x = 612,111.15 × 347,712.90
  4. Step 4: Simplify right side
    408,074.10x = 212,838,943,088.84
  5. Step 5: Solve for x
    x = 212,838,943,088.84/408,074.10
  6. Step 6: Final answer
    x = 521,569.35

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Similar ratio
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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.