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Finding the Fourth Proportional to 528,672.33, 729,568.53 and 286,954.95

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Solution

The fourth proportional to 528,672.33, 729,568.53 and 286,954.95 is: 395,998.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,672.33 : 729,568.53 = 286,954.95 : x
  2. Step 2: Convert to fraction form
    528,672.33/729,568.53 = 286,954.95/x
  3. Step 3: Cross multiply
    528,672.33x = 729,568.53 × 286,954.95
  4. Step 4: Simplify right side
    528,672.33x = 209,353,301,047.72
  5. Step 5: Solve for x
    x = 209,353,301,047.72/528,672.33
  6. Step 6: Final answer
    x = 395,998.22

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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.