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Finding the Fourth Proportional to 768,661.60, 1,152,992.40 and 756,851.80

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Solution

The fourth proportional to 768,661.60, 1,152,992.40 and 756,851.80 is: 1,135,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,661.60 : 1,152,992.40 = 756,851.80 : x
  2. Step 2: Convert to fraction form
    768,661.60/1,152,992.40 = 756,851.80/x
  3. Step 3: Cross multiply
    768,661.60x = 1,152,992.40 × 756,851.80
  4. Step 4: Simplify right side
    768,661.60x = 872,644,373,326.32
  5. Step 5: Solve for x
    x = 872,644,373,326.32/768,661.60
  6. Step 6: Final answer
    x = 1,135,277.70

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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.