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Finding the Fourth Proportional to 528,604.29, 729,473.90 and 286,886.88

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Solution

The fourth proportional to 528,604.29, 729,473.90 and 286,886.88 is: 395,903.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,604.29 : 729,473.90 = 286,886.88 : x
  2. Step 2: Convert to fraction form
    528,604.29/729,473.90 = 286,886.88/x
  3. Step 3: Cross multiply
    528,604.29x = 729,473.90 × 286,886.88
  4. Step 4: Simplify right side
    528,604.29x = 209,276,489,778.00
  5. Step 5: Solve for x
    x = 209,276,489,778.00/528,604.29
  6. Step 6: Final answer
    x = 395,903.88

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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.