Home / 917,658.40-1,376,487.60-858,609.40

Finding the Fourth Proportional to 917,658.40, 1,376,487.60 and 858,609.40

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Solution

The fourth proportional to 917,658.40, 1,376,487.60 and 858,609.40 is: 1,287,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,658.40 : 1,376,487.60 = 858,609.40 : x
  2. Step 2: Convert to fraction form
    917,658.40/1,376,487.60 = 858,609.40/x
  3. Step 3: Cross multiply
    917,658.40x = 1,376,487.60 × 858,609.40
  4. Step 4: Simplify right side
    917,658.40x = 1,181,865,192,343.44
  5. Step 5: Solve for x
    x = 1,181,865,192,343.44/917,658.40
  6. Step 6: Final answer
    x = 1,287,914.10

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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.