Home / 456,421.20-684,631.80-207,103.20

Finding the Fourth Proportional to 456,421.20, 684,631.80 and 207,103.20

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Solution

The fourth proportional to 456,421.20, 684,631.80 and 207,103.20 is: 310,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,421.20 : 684,631.80 = 207,103.20 : x
  2. Step 2: Convert to fraction form
    456,421.20/684,631.80 = 207,103.20/x
  3. Step 3: Cross multiply
    456,421.20x = 684,631.80 × 207,103.20
  4. Step 4: Simplify right side
    456,421.20x = 141,789,436,601.76
  5. Step 5: Solve for x
    x = 141,789,436,601.76/456,421.20
  6. Step 6: Final answer
    x = 310,654.80

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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.