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Finding the Fourth Proportional to 612,049.20, 918,219.60 and 296,246.40

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Solution

The fourth proportional to 612,049.20, 918,219.60 and 296,246.40 is: 444,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,049.20 : 918,219.60 = 296,246.40 : x
  2. Step 2: Convert to fraction form
    612,049.20/918,219.60 = 296,246.40/x
  3. Step 3: Cross multiply
    612,049.20x = 918,219.60 × 296,246.40
  4. Step 4: Simplify right side
    612,049.20x = 272,019,250,909.44
  5. Step 5: Solve for x
    x = 272,019,250,909.44/612,049.20
  6. Step 6: Final answer
    x = 444,440.17

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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.