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Finding the Fourth Proportional to 436,207.80, 654,311.70 and 286,908.60

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Solution

The fourth proportional to 436,207.80, 654,311.70 and 286,908.60 is: 430,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,207.80 : 654,311.70 = 286,908.60 : x
  2. Step 2: Convert to fraction form
    436,207.80/654,311.70 = 286,908.60/x
  3. Step 3: Cross multiply
    436,207.80x = 654,311.70 × 286,908.60
  4. Step 4: Simplify right side
    436,207.80x = 187,727,653,810.62
  5. Step 5: Solve for x
    x = 187,727,653,810.62/436,207.80
  6. Step 6: Final answer
    x = 430,362.90

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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.