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Finding the Fourth Proportional to 528,996.96, 730,001.52 and 287,268.48

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Solution

The fourth proportional to 528,996.96, 730,001.52 and 287,268.48 is: 396,422.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,996.96 : 730,001.52 = 287,268.48 : x
  2. Step 2: Convert to fraction form
    528,996.96/730,001.52 = 287,268.48/x
  3. Step 3: Cross multiply
    528,996.96x = 730,001.52 × 287,268.48
  4. Step 4: Simplify right side
    528,996.96x = 209,706,427,048.09
  5. Step 5: Solve for x
    x = 209,706,427,048.09/528,996.96
  6. Step 6: Final answer
    x = 396,422.75

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1.5x scale

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.