Home / 689,706.78-1,034,548.08-310,359.02

Finding the Fourth Proportional to 689,706.78, 1,034,548.08 and 310,359.02

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Solution

The fourth proportional to 689,706.78, 1,034,548.08 and 310,359.02 is: 465,533.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,706.78 : 1,034,548.08 = 310,359.02 : x
  2. Step 2: Convert to fraction form
    689,706.78/1,034,548.08 = 310,359.02/x
  3. Step 3: Cross multiply
    689,706.78x = 1,034,548.08 × 310,359.02
  4. Step 4: Simplify right side
    689,706.78x = 321,081,328,251.68
  5. Step 5: Solve for x
    x = 321,081,328,251.68/689,706.78
  6. Step 6: Final answer
    x = 465,533.09

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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.