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Finding the Fourth Proportional to 639,585.80, 960,156.30 and 323,880.20

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Solution

The fourth proportional to 639,585.80, 960,156.30 and 323,880.20 is: 486,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,585.80 : 960,156.30 = 323,880.20 : x
  2. Step 2: Convert to fraction form
    639,585.80/960,156.30 = 323,880.20/x
  3. Step 3: Cross multiply
    639,585.80x = 960,156.30 × 323,880.20
  4. Step 4: Simplify right side
    639,585.80x = 310,975,614,475.26
  5. Step 5: Solve for x
    x = 310,975,614,475.26/639,585.80
  6. Step 6: Final answer
    x = 486,214.07

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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.