Home / 642,386.72-964,016.12-343,082.12

Finding the Fourth Proportional to 642,386.72, 964,016.12 and 343,082.12

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Solution

The fourth proportional to 642,386.72, 964,016.12 and 343,082.12 is: 514,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,386.72 : 964,016.12 = 343,082.12 : x
  2. Step 2: Convert to fraction form
    642,386.72/964,016.12 = 343,082.12/x
  3. Step 3: Cross multiply
    642,386.72x = 964,016.12 × 343,082.12
  4. Step 4: Simplify right side
    642,386.72x = 330,736,690,201.40
  5. Step 5: Solve for x
    x = 330,736,690,201.40/642,386.72
  6. Step 6: Final answer
    x = 514,856.05

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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.