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Finding the Fourth Proportional to 456,439.60, 684,659.40 and 453,815.20

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Solution

The fourth proportional to 456,439.60, 684,659.40 and 453,815.20 is: 680,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,439.60 : 684,659.40 = 453,815.20 : x
  2. Step 2: Convert to fraction form
    456,439.60/684,659.40 = 453,815.20/x
  3. Step 3: Cross multiply
    456,439.60x = 684,659.40 × 453,815.20
  4. Step 4: Simplify right side
    456,439.60x = 310,708,842,542.88
  5. Step 5: Solve for x
    x = 310,708,842,542.88/456,439.60
  6. Step 6: Final answer
    x = 680,722.80

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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.