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Finding the Fourth Proportional to 778,855.80, 1,165,691.70 and 565,015.80

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Solution

The fourth proportional to 778,855.80, 1,165,691.70 and 565,015.80 is: 845,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,855.80 : 1,165,691.70 = 565,015.80 : x
  2. Step 2: Convert to fraction form
    778,855.80/1,165,691.70 = 565,015.80/x
  3. Step 3: Cross multiply
    778,855.80x = 1,165,691.70 × 565,015.80
  4. Step 4: Simplify right side
    778,855.80x = 658,634,228,428.86
  5. Step 5: Solve for x
    x = 658,634,228,428.86/778,855.80
  6. Step 6: Final answer
    x = 845,643.35

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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.