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Finding the Fourth Proportional to 528,673.34, 729,569.92 and 286,955.96

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Solution

The fourth proportional to 528,673.34, 729,569.92 and 286,955.96 is: 395,999.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,673.34 : 729,569.92 = 286,955.96 : x
  2. Step 2: Convert to fraction form
    528,673.34/729,569.92 = 286,955.96/x
  3. Step 3: Cross multiply
    528,673.34x = 729,569.92 × 286,955.96
  4. Step 4: Simplify right side
    528,673.34x = 209,354,436,780.72
  5. Step 5: Solve for x
    x = 209,354,436,780.72/528,673.34
  6. Step 6: Final answer
    x = 395,999.61

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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.