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Finding the Fourth Proportional to 768,322.13, 1,060,301.54 and 424,157.31

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Solution

The fourth proportional to 768,322.13, 1,060,301.54 and 424,157.31 is: 585,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,322.13 : 1,060,301.54 = 424,157.31 : x
  2. Step 2: Convert to fraction form
    768,322.13/1,060,301.54 = 424,157.31/x
  3. Step 3: Cross multiply
    768,322.13x = 1,060,301.54 × 424,157.31
  4. Step 4: Simplify right side
    768,322.13x = 449,734,650,055.65
  5. Step 5: Solve for x
    x = 449,734,650,055.65/768,322.13
  6. Step 6: Final answer
    x = 585,346.48

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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.