Home / 898,999.72-1,239,461.95-641,170.65

Finding the Fourth Proportional to 898,999.72, 1,239,461.95 and 641,170.65

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Solution

The fourth proportional to 898,999.72, 1,239,461.95 and 641,170.65 is: 883,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,999.72 : 1,239,461.95 = 641,170.65 : x
  2. Step 2: Convert to fraction form
    898,999.72/1,239,461.95 = 641,170.65/x
  3. Step 3: Cross multiply
    898,999.72x = 1,239,461.95 × 641,170.65
  4. Step 4: Simplify right side
    898,999.72x = 794,706,624,131.77
  5. Step 5: Solve for x
    x = 794,706,624,131.77/898,999.72
  6. Step 6: Final answer
    x = 883,989.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.