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Finding the Fourth Proportional to 770,641.60, 1,155,616.80 and 349,700.80

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Solution

The fourth proportional to 770,641.60, 1,155,616.80 and 349,700.80 is: 524,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,641.60 : 1,155,616.80 = 349,700.80 : x
  2. Step 2: Convert to fraction form
    770,641.60/1,155,616.80 = 349,700.80/x
  3. Step 3: Cross multiply
    770,641.60x = 1,155,616.80 × 349,700.80
  4. Step 4: Simplify right side
    770,641.60x = 404,120,119,453.44
  5. Step 5: Solve for x
    x = 404,120,119,453.44/770,641.60
  6. Step 6: Final answer
    x = 524,394.37

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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.