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Finding the Fourth Proportional to 528,215.82, 728,975.52 and 298,775.22

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Solution

The fourth proportional to 528,215.82, 728,975.52 and 298,775.22 is: 412,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,215.82 : 728,975.52 = 298,775.22 : x
  2. Step 2: Convert to fraction form
    528,215.82/728,975.52 = 298,775.22/x
  3. Step 3: Cross multiply
    528,215.82x = 728,975.52 × 298,775.22
  4. Step 4: Simplify right side
    528,215.82x = 217,799,821,362.61
  5. Step 5: Solve for x
    x = 217,799,821,362.61/528,215.82
  6. Step 6: Final answer
    x = 412,331.12

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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.