Home / 689,705.65-1,034,546.40-310,357.89

Finding the Fourth Proportional to 689,705.65, 1,034,546.40 and 310,357.89

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Solution

The fourth proportional to 689,705.65, 1,034,546.40 and 310,357.89 is: 465,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,705.65 : 1,034,546.40 = 310,357.89 : x
  2. Step 2: Convert to fraction form
    689,705.65/1,034,546.40 = 310,357.89/x
  3. Step 3: Cross multiply
    689,705.65x = 1,034,546.40 × 310,357.89
  4. Step 4: Simplify right side
    689,705.65x = 321,079,639,621.57
  5. Step 5: Solve for x
    x = 321,079,639,621.57/689,705.65
  6. Step 6: Final answer
    x = 465,531.41

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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.