Home / 528,948.22-729,945.90-287,228.64

Finding the Fourth Proportional to 528,948.22, 729,945.90 and 287,228.64

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Solution

The fourth proportional to 528,948.22, 729,945.90 and 287,228.64 is: 396,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,948.22 : 729,945.90 = 287,228.64 : x
  2. Step 2: Convert to fraction form
    528,948.22/729,945.90 = 287,228.64/x
  3. Step 3: Cross multiply
    528,948.22x = 729,945.90 × 287,228.64
  4. Step 4: Simplify right side
    528,948.22x = 209,661,368,130.58
  5. Step 5: Solve for x
    x = 209,661,368,130.58/528,948.22
  6. Step 6: Final answer
    x = 396,374.09

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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.