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Finding the Fourth Proportional to 612,601.97, 918,303.05 and 342,861.85

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Solution

The fourth proportional to 612,601.97, 918,303.05 and 342,861.85 is: 513,957.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,601.97 : 918,303.05 = 342,861.85 : x
  2. Step 2: Convert to fraction form
    612,601.97/918,303.05 = 342,861.85/x
  3. Step 3: Cross multiply
    612,601.97x = 918,303.05 × 342,861.85
  4. Step 4: Simplify right side
    612,601.97x = 314,851,081,145.04
  5. Step 5: Solve for x
    x = 314,851,081,145.04/612,601.97
  6. Step 6: Final answer
    x = 513,957.01

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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.