Home / 456,145.20-684,217.80-385,286.40

Finding the Fourth Proportional to 456,145.20, 684,217.80 and 385,286.40

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Solution

The fourth proportional to 456,145.20, 684,217.80 and 385,286.40 is: 577,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,145.20 : 684,217.80 = 385,286.40 : x
  2. Step 2: Convert to fraction form
    456,145.20/684,217.80 = 385,286.40/x
  3. Step 3: Cross multiply
    456,145.20x = 684,217.80 × 385,286.40
  4. Step 4: Simplify right side
    456,145.20x = 263,619,812,977.92
  5. Step 5: Solve for x
    x = 263,619,812,977.92/456,145.20
  6. Step 6: Final answer
    x = 577,929.60

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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.