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Finding the Fourth Proportional to 408,304.55, 611,259.17 and 286,302.04

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Solution

The fourth proportional to 408,304.55, 611,259.17 and 286,302.04 is: 428,613.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,304.55 : 611,259.17 = 286,302.04 : x
  2. Step 2: Convert to fraction form
    408,304.55/611,259.17 = 286,302.04/x
  3. Step 3: Cross multiply
    408,304.55x = 611,259.17 × 286,302.04
  4. Step 4: Simplify right side
    408,304.55x = 175,004,748,152.10
  5. Step 5: Solve for x
    x = 175,004,748,152.10/408,304.55
  6. Step 6: Final answer
    x = 428,613.27

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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.