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Finding the Fourth Proportional to 612,098.70, 918,148.05 and 372,597.90

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Solution

The fourth proportional to 612,098.70, 918,148.05 and 372,597.90 is: 558,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,098.70 : 918,148.05 = 372,597.90 : x
  2. Step 2: Convert to fraction form
    612,098.70/918,148.05 = 372,597.90/x
  3. Step 3: Cross multiply
    612,098.70x = 918,148.05 × 372,597.90
  4. Step 4: Simplify right side
    612,098.70x = 342,100,035,319.10
  5. Step 5: Solve for x
    x = 342,100,035,319.10/612,098.70
  6. Step 6: Final answer
    x = 558,896.85

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Similar ratio
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1.5x scale

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.