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Finding the Fourth Proportional to 768,405.66, 1,060,394.86 and 424,263.04

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Solution

The fourth proportional to 768,405.66, 1,060,394.86 and 424,263.04 is: 585,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,405.66 : 1,060,394.86 = 424,263.04 : x
  2. Step 2: Convert to fraction form
    768,405.66/1,060,394.86 = 424,263.04/x
  3. Step 3: Cross multiply
    768,405.66x = 1,060,394.86 × 424,263.04
  4. Step 4: Simplify right side
    768,405.66x = 449,886,339,480.69
  5. Step 5: Solve for x
    x = 449,886,339,480.69/768,405.66
  6. Step 6: Final answer
    x = 585,480.25

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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.