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Finding the Fourth Proportional to 559,630.80, 839,446.20 and 307,688.40

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Solution

The fourth proportional to 559,630.80, 839,446.20 and 307,688.40 is: 461,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,630.80 : 839,446.20 = 307,688.40 : x
  2. Step 2: Convert to fraction form
    559,630.80/839,446.20 = 307,688.40/x
  3. Step 3: Cross multiply
    559,630.80x = 839,446.20 × 307,688.40
  4. Step 4: Simplify right side
    559,630.80x = 258,287,858,164.08
  5. Step 5: Solve for x
    x = 258,287,858,164.08/559,630.80
  6. Step 6: Final answer
    x = 461,532.60

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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.