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Finding the Fourth Proportional to 906,234.40, 1,359,308.40 and 307,136.80

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Solution

The fourth proportional to 906,234.40, 1,359,308.40 and 307,136.80 is: 460,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,234.40 : 1,359,308.40 = 307,136.80 : x
  2. Step 2: Convert to fraction form
    906,234.40/1,359,308.40 = 307,136.80/x
  3. Step 3: Cross multiply
    906,234.40x = 1,359,308.40 × 307,136.80
  4. Step 4: Simplify right side
    906,234.40x = 417,493,632,189.12
  5. Step 5: Solve for x
    x = 417,493,632,189.12/906,234.40
  6. Step 6: Final answer
    x = 460,690.56

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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.