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Finding the Fourth Proportional to 768,221.16, 1,060,145.41 and 424,057.30

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Solution

The fourth proportional to 768,221.16, 1,060,145.41 and 424,057.30 is: 585,199.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,221.16 : 1,060,145.41 = 424,057.30 : x
  2. Step 2: Convert to fraction form
    768,221.16/1,060,145.41 = 424,057.30/x
  3. Step 3: Cross multiply
    768,221.16x = 1,060,145.41 × 424,057.30
  4. Step 4: Simplify right side
    768,221.16x = 449,562,399,045.59
  5. Step 5: Solve for x
    x = 449,562,399,045.59/768,221.16
  6. Step 6: Final answer
    x = 585,199.19

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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.