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Finding the Fourth Proportional to 528,450.75, 729,259.59 and 286,732.73

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Solution

The fourth proportional to 528,450.75, 729,259.59 and 286,732.73 is: 395,689.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,450.75 : 729,259.59 = 286,732.73 : x
  2. Step 2: Convert to fraction form
    528,450.75/729,259.59 = 286,732.73/x
  3. Step 3: Cross multiply
    528,450.75x = 729,259.59 × 286,732.73
  4. Step 4: Simplify right side
    528,450.75x = 209,102,589,473.08
  5. Step 5: Solve for x
    x = 209,102,589,473.08/528,450.75
  6. Step 6: Final answer
    x = 395,689.83

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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.