Home / 487,064.56-672,576.60-306,090.04

Finding the Fourth Proportional to 487,064.56, 672,576.60 and 306,090.04

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Solution

The fourth proportional to 487,064.56, 672,576.60 and 306,090.04 is: 422,672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,064.56 : 672,576.60 = 306,090.04 : x
  2. Step 2: Convert to fraction form
    487,064.56/672,576.60 = 306,090.04/x
  3. Step 3: Cross multiply
    487,064.56x = 672,576.60 × 306,090.04
  4. Step 4: Simplify right side
    487,064.56x = 205,868,998,397.06
  5. Step 5: Solve for x
    x = 205,868,998,397.06/487,064.56
  6. Step 6: Final answer
    x = 422,672.92

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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.