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Finding the Fourth Proportional to 528,451.75, 729,260.97 and 286,733.73

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Solution

The fourth proportional to 528,451.75, 729,260.97 and 286,733.73 is: 395,691.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,451.75 : 729,260.97 = 286,733.73 : x
  2. Step 2: Convert to fraction form
    528,451.75/729,260.97 = 286,733.73/x
  3. Step 3: Cross multiply
    528,451.75x = 729,260.97 × 286,733.73
  4. Step 4: Simplify right side
    528,451.75x = 209,103,718,071.52
  5. Step 5: Solve for x
    x = 209,103,718,071.52/528,451.75
  6. Step 6: Final answer
    x = 395,691.22

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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.