Home / 485,669.16-729,137.28-326,458.29

Finding the Fourth Proportional to 485,669.16, 729,137.28 and 326,458.29

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Solution

The fourth proportional to 485,669.16, 729,137.28 and 326,458.29 is: 490,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,669.16 : 729,137.28 = 326,458.29 : x
  2. Step 2: Convert to fraction form
    485,669.16/729,137.28 = 326,458.29/x
  3. Step 3: Cross multiply
    485,669.16x = 729,137.28 × 326,458.29
  4. Step 4: Simplify right side
    485,669.16x = 238,032,913,562.54
  5. Step 5: Solve for x
    x = 238,032,913,562.54/485,669.16
  6. Step 6: Final answer
    x = 490,113.30

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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.