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Finding the Fourth Proportional to 768,048.80, 1,152,418.80 and 368,535.20

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Solution

The fourth proportional to 768,048.80, 1,152,418.80 and 368,535.20 is: 552,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,048.80 : 1,152,418.80 = 368,535.20 : x
  2. Step 2: Convert to fraction form
    768,048.80/1,152,418.80 = 368,535.20/x
  3. Step 3: Cross multiply
    768,048.80x = 1,152,418.80 × 368,535.20
  4. Step 4: Simplify right side
    768,048.80x = 424,706,892,941.76
  5. Step 5: Solve for x
    x = 424,706,892,941.76/768,048.80
  6. Step 6: Final answer
    x = 552,968.63

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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.