Home / 467,028.08-643,989.12-315,862.64

Finding the Fourth Proportional to 467,028.08, 643,989.12 and 315,862.64

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Solution

The fourth proportional to 467,028.08, 643,989.12 and 315,862.64 is: 435,545.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,028.08 : 643,989.12 = 315,862.64 : x
  2. Step 2: Convert to fraction form
    467,028.08/643,989.12 = 315,862.64/x
  3. Step 3: Cross multiply
    467,028.08x = 643,989.12 × 315,862.64
  4. Step 4: Simplify right side
    467,028.08x = 203,412,103,574.48
  5. Step 5: Solve for x
    x = 203,412,103,574.48/467,028.08
  6. Step 6: Final answer
    x = 435,545.77

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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.