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Finding the Fourth Proportional to 528,762.96, 729,693.81 and 287,045.73

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Solution

The fourth proportional to 528,762.96, 729,693.81 and 287,045.73 is: 396,123.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,762.96 : 729,693.81 = 287,045.73 : x
  2. Step 2: Convert to fraction form
    528,762.96/729,693.81 = 287,045.73/x
  3. Step 3: Cross multiply
    528,762.96x = 729,693.81 × 287,045.73
  4. Step 4: Simplify right side
    528,762.96x = 209,455,492,367.93
  5. Step 5: Solve for x
    x = 209,455,492,367.93/528,762.96
  6. Step 6: Final answer
    x = 396,123.61

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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.