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Finding the Fourth Proportional to 528,722.70, 729,649.65 and 313,863.58

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Solution

The fourth proportional to 528,722.70, 729,649.65 and 313,863.58 is: 433,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,722.70 : 729,649.65 = 313,863.58 : x
  2. Step 2: Convert to fraction form
    528,722.70/729,649.65 = 313,863.58/x
  3. Step 3: Cross multiply
    528,722.70x = 729,649.65 × 313,863.58
  4. Step 4: Simplify right side
    528,722.70x = 229,010,451,294.75
  5. Step 5: Solve for x
    x = 229,010,451,294.75/528,722.70
  6. Step 6: Final answer
    x = 433,139.06

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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.