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Finding the Fourth Proportional to 557,095.20, 835,642.80 and 521,665.80

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Solution

The fourth proportional to 557,095.20, 835,642.80 and 521,665.80 is: 782,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,095.20 : 835,642.80 = 521,665.80 : x
  2. Step 2: Convert to fraction form
    557,095.20/835,642.80 = 521,665.80/x
  3. Step 3: Cross multiply
    557,095.20x = 835,642.80 × 521,665.80
  4. Step 4: Simplify right side
    557,095.20x = 435,926,269,776.24
  5. Step 5: Solve for x
    x = 435,926,269,776.24/557,095.20
  6. Step 6: Final answer
    x = 782,498.70

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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.