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Finding the Fourth Proportional to 626,863.60, 940,909.80 and 311,676.40

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Solution

The fourth proportional to 626,863.60, 940,909.80 and 311,676.40 is: 467,820.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,863.60 : 940,909.80 = 311,676.40 : x
  2. Step 2: Convert to fraction form
    626,863.60/940,909.80 = 311,676.40/x
  3. Step 3: Cross multiply
    626,863.60x = 940,909.80 × 311,676.40
  4. Step 4: Simplify right side
    626,863.60x = 293,259,379,188.72
  5. Step 5: Solve for x
    x = 293,259,379,188.72/626,863.60
  6. Step 6: Final answer
    x = 467,820.08

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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.