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Finding the Fourth Proportional to 479,000.19, 717,686.94 and 289,061.44

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Solution

The fourth proportional to 479,000.19, 717,686.94 and 289,061.44 is: 433,101.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,000.19 : 717,686.94 = 289,061.44 : x
  2. Step 2: Convert to fraction form
    479,000.19/717,686.94 = 289,061.44/x
  3. Step 3: Cross multiply
    479,000.19x = 717,686.94 × 289,061.44
  4. Step 4: Simplify right side
    479,000.19x = 207,455,622,859.36
  5. Step 5: Solve for x
    x = 207,455,622,859.36/479,000.19
  6. Step 6: Final answer
    x = 433,101.34

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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.