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Finding the Fourth Proportional to 528,668.51, 729,563.28 and 286,951.13

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Solution

The fourth proportional to 528,668.51, 729,563.28 and 286,951.13 is: 395,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,668.51 : 729,563.28 = 286,951.13 : x
  2. Step 2: Convert to fraction form
    528,668.51/729,563.28 = 286,951.13/x
  3. Step 3: Cross multiply
    528,668.51x = 729,563.28 × 286,951.13
  4. Step 4: Simplify right side
    528,668.51x = 209,349,008,473.43
  5. Step 5: Solve for x
    x = 209,349,008,473.43/528,668.51
  6. Step 6: Final answer
    x = 395,992.96

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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.