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Finding the Fourth Proportional to 528,002.92, 728,639.55 and 298,605.25

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Solution

The fourth proportional to 528,002.92, 728,639.55 and 298,605.25 is: 412,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,002.92 : 728,639.55 = 298,605.25 : x
  2. Step 2: Convert to fraction form
    528,002.92/728,639.55 = 298,605.25/x
  3. Step 3: Cross multiply
    528,002.92x = 728,639.55 × 298,605.25
  4. Step 4: Simplify right side
    528,002.92x = 217,575,594,987.64
  5. Step 5: Solve for x
    x = 217,575,594,987.64/528,002.92
  6. Step 6: Final answer
    x = 412,072.71

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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.