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Finding the Fourth Proportional to 528,596.87, 729,469.13 and 286,881.53

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Solution

The fourth proportional to 528,596.87, 729,469.13 and 286,881.53 is: 395,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,596.87 : 729,469.13 = 286,881.53 : x
  2. Step 2: Convert to fraction form
    528,596.87/729,469.13 = 286,881.53/x
  3. Step 3: Cross multiply
    528,596.87x = 729,469.13 × 286,881.53
  4. Step 4: Simplify right side
    528,596.87x = 209,271,215,020.42
  5. Step 5: Solve for x
    x = 209,271,215,020.42/528,596.87
  6. Step 6: Final answer
    x = 395,899.46

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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.