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Finding the Fourth Proportional to 886,674.40, 1,330,456.56 and 413,396.80

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Solution

The fourth proportional to 886,674.40, 1,330,456.56 and 413,396.80 is: 620,302.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,674.40 : 1,330,456.56 = 413,396.80 : x
  2. Step 2: Convert to fraction form
    886,674.40/1,330,456.56 = 413,396.80/x
  3. Step 3: Cross multiply
    886,674.40x = 1,330,456.56 × 413,396.80
  4. Step 4: Simplify right side
    886,674.40x = 550,006,484,443.01
  5. Step 5: Solve for x
    x = 550,006,484,443.01/886,674.40
  6. Step 6: Final answer
    x = 620,302.66

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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.