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Finding the Fourth Proportional to 626,675.70, 940,013.55 and 311,747.70

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Solution

The fourth proportional to 626,675.70, 940,013.55 and 311,747.70 is: 467,621.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,675.70 : 940,013.55 = 311,747.70 : x
  2. Step 2: Convert to fraction form
    626,675.70/940,013.55 = 311,747.70/x
  3. Step 3: Cross multiply
    626,675.70x = 940,013.55 × 311,747.70
  4. Step 4: Simplify right side
    626,675.70x = 293,047,062,181.34
  5. Step 5: Solve for x
    x = 293,047,062,181.34/626,675.70
  6. Step 6: Final answer
    x = 467,621.55

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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.