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Finding the Fourth Proportional to 827,875.70, 1,240,774.70 and 354,003.83

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Solution

The fourth proportional to 827,875.70, 1,240,774.70 and 354,003.83 is: 530,561.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,875.70 : 1,240,774.70 = 354,003.83 : x
  2. Step 2: Convert to fraction form
    827,875.70/1,240,774.70 = 354,003.83/x
  3. Step 3: Cross multiply
    827,875.70x = 1,240,774.70 × 354,003.83
  4. Step 4: Simplify right side
    827,875.70x = 439,238,987,993.21
  5. Step 5: Solve for x
    x = 439,238,987,993.21/827,875.70
  6. Step 6: Final answer
    x = 530,561.52

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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.