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Finding the Fourth Proportional to 528,605.29, 729,475.27 and 286,887.88

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Solution

The fourth proportional to 528,605.29, 729,475.27 and 286,887.88 is: 395,905.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,605.29 : 729,475.27 = 286,887.88 : x
  2. Step 2: Convert to fraction form
    528,605.29/729,475.27 = 286,887.88/x
  3. Step 3: Cross multiply
    528,605.29x = 729,475.27 × 286,887.88
  4. Step 4: Simplify right side
    528,605.29x = 209,277,613,722.73
  5. Step 5: Solve for x
    x = 209,277,613,722.73/528,605.29
  6. Step 6: Final answer
    x = 395,905.26

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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.