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Finding the Fourth Proportional to 557,148.20, 835,722.30 and 521,718.80

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Solution

The fourth proportional to 557,148.20, 835,722.30 and 521,718.80 is: 782,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,148.20 : 835,722.30 = 521,718.80 : x
  2. Step 2: Convert to fraction form
    557,148.20/835,722.30 = 521,718.80/x
  3. Step 3: Cross multiply
    557,148.20x = 835,722.30 × 521,718.80
  4. Step 4: Simplify right side
    557,148.20x = 436,012,035,489.24
  5. Step 5: Solve for x
    x = 436,012,035,489.24/557,148.20
  6. Step 6: Final answer
    x = 782,578.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.