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Finding the Fourth Proportional to 578,967.80, 869,229.30 and 369,534.20

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Solution

The fourth proportional to 578,967.80, 869,229.30 and 369,534.20 is: 554,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,967.80 : 869,229.30 = 369,534.20 : x
  2. Step 2: Convert to fraction form
    578,967.80/869,229.30 = 369,534.20/x
  3. Step 3: Cross multiply
    578,967.80x = 869,229.30 × 369,534.20
  4. Step 4: Simplify right side
    578,967.80x = 321,209,953,992.06
  5. Step 5: Solve for x
    x = 321,209,953,992.06/578,967.80
  6. Step 6: Final answer
    x = 554,797.61

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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.