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Finding the Fourth Proportional to 528,658.57, 729,549.48 and 286,941.23

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Solution

The fourth proportional to 528,658.57, 729,549.48 and 286,941.23 is: 395,979.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,658.57 : 729,549.48 = 286,941.23 : x
  2. Step 2: Convert to fraction form
    528,658.57/729,549.48 = 286,941.23/x
  3. Step 3: Cross multiply
    528,658.57x = 729,549.48 × 286,941.23
  4. Step 4: Simplify right side
    528,658.57x = 209,337,829,404.87
  5. Step 5: Solve for x
    x = 209,337,829,404.87/528,658.57
  6. Step 6: Final answer
    x = 395,979.26

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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.