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Finding the Fourth Proportional to 559,617.20, 839,425.80 and 307,674.80

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Solution

The fourth proportional to 559,617.20, 839,425.80 and 307,674.80 is: 461,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,617.20 : 839,425.80 = 307,674.80 : x
  2. Step 2: Convert to fraction form
    559,617.20/839,425.80 = 307,674.80/x
  3. Step 3: Cross multiply
    559,617.20x = 839,425.80 × 307,674.80
  4. Step 4: Simplify right side
    559,617.20x = 258,270,165,129.84
  5. Step 5: Solve for x
    x = 258,270,165,129.84/559,617.20
  6. Step 6: Final answer
    x = 461,512.20

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Similar ratio
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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.