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Finding the Fourth Proportional to 559,965.60, 839,948.40 and 280,029.60

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Solution

The fourth proportional to 559,965.60, 839,948.40 and 280,029.60 is: 420,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,965.60 : 839,948.40 = 280,029.60 : x
  2. Step 2: Convert to fraction form
    559,965.60/839,948.40 = 280,029.60/x
  3. Step 3: Cross multiply
    559,965.60x = 839,948.40 × 280,029.60
  4. Step 4: Simplify right side
    559,965.60x = 235,210,414,472.64
  5. Step 5: Solve for x
    x = 235,210,414,472.64/559,965.60
  6. Step 6: Final answer
    x = 420,044.40

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Half scale
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Double scale
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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.