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Finding the Fourth Proportional to 768,704.76, 1,153,268.55 and 369,679.32

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Solution

The fourth proportional to 768,704.76, 1,153,268.55 and 369,679.32 is: 554,620.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,704.76 : 1,153,268.55 = 369,679.32 : x
  2. Step 2: Convert to fraction form
    768,704.76/1,153,268.55 = 369,679.32/x
  3. Step 3: Cross multiply
    768,704.76x = 1,153,268.55 × 369,679.32
  4. Step 4: Simplify right side
    768,704.76x = 426,339,533,341.39
  5. Step 5: Solve for x
    x = 426,339,533,341.39/768,704.76
  6. Step 6: Final answer
    x = 554,620.65

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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.