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Finding the Fourth Proportional to 503,498.40, 755,247.60 and 290,630.40

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Solution

The fourth proportional to 503,498.40, 755,247.60 and 290,630.40 is: 435,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,498.40 : 755,247.60 = 290,630.40 : x
  2. Step 2: Convert to fraction form
    503,498.40/755,247.60 = 290,630.40/x
  3. Step 3: Cross multiply
    503,498.40x = 755,247.60 × 290,630.40
  4. Step 4: Simplify right side
    503,498.40x = 219,497,912,087.04
  5. Step 5: Solve for x
    x = 219,497,912,087.04/503,498.40
  6. Step 6: Final answer
    x = 435,945.60

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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.