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Finding the Fourth Proportional to 886,676.40, 1,330,459.56 and 413,398.80

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Solution

The fourth proportional to 886,676.40, 1,330,459.56 and 413,398.80 is: 620,305.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,676.40 : 1,330,459.56 = 413,398.80 : x
  2. Step 2: Convert to fraction form
    886,676.40/1,330,459.56 = 413,398.80/x
  3. Step 3: Cross multiply
    886,676.40x = 1,330,459.56 × 413,398.80
  4. Step 4: Simplify right side
    886,676.40x = 550,010,385,552.53
  5. Step 5: Solve for x
    x = 550,010,385,552.53/886,676.40
  6. Step 6: Final answer
    x = 620,305.66

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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.