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Finding the Fourth Proportional to 768,820.60, 1,153,228.18 and 207,855

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Solution

The fourth proportional to 768,820.60, 1,153,228.18 and 207,855 is: 311,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,820.60 : 1,153,228.18 = 207,855 : x
  2. Step 2: Convert to fraction form
    768,820.60/1,153,228.18 = 207,855/x
  3. Step 3: Cross multiply
    768,820.60x = 1,153,228.18 × 207,855
  4. Step 4: Simplify right side
    768,820.60x = 239,704,243,353.90
  5. Step 5: Solve for x
    x = 239,704,243,353.90/768,820.60
  6. Step 6: Final answer
    x = 311,781.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.