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Finding the Fourth Proportional to 612,602.10, 918,303.24 and 342,861.97

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Solution

The fourth proportional to 612,602.10, 918,303.24 and 342,861.97 is: 513,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,602.10 : 918,303.24 = 342,861.97 : x
  2. Step 2: Convert to fraction form
    612,602.10/918,303.24 = 342,861.97/x
  3. Step 3: Cross multiply
    612,602.10x = 918,303.24 × 342,861.97
  4. Step 4: Simplify right side
    612,602.10x = 314,851,257,923.78
  5. Step 5: Solve for x
    x = 314,851,257,923.78/612,602.10
  6. Step 6: Final answer
    x = 513,957.20

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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.