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Finding the Fourth Proportional to 911,080.42, 1,366,657.35 and 342,402.10

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Solution

The fourth proportional to 911,080.42, 1,366,657.35 and 342,402.10 is: 513,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,080.42 : 1,366,657.35 = 342,402.10 : x
  2. Step 2: Convert to fraction form
    911,080.42/1,366,657.35 = 342,402.10/x
  3. Step 3: Cross multiply
    911,080.42x = 1,366,657.35 × 342,402.10
  4. Step 4: Simplify right side
    911,080.42x = 467,946,346,620.44
  5. Step 5: Solve for x
    x = 467,946,346,620.44/911,080.42
  6. Step 6: Final answer
    x = 513,616.95

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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.