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Finding the Fourth Proportional to 867,074.55, 1,300,497 and 393,651.03

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Solution

The fourth proportional to 867,074.55, 1,300,497 and 393,651.03 is: 590,424.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,074.55 : 1,300,497 = 393,651.03 : x
  2. Step 2: Convert to fraction form
    867,074.55/1,300,497 = 393,651.03/x
  3. Step 3: Cross multiply
    867,074.55x = 1,300,497 × 393,651.03
  4. Step 4: Simplify right side
    867,074.55x = 511,941,983,561.91
  5. Step 5: Solve for x
    x = 511,941,983,561.91/867,074.55
  6. Step 6: Final answer
    x = 590,424.41

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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.