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Finding the Fourth Proportional to 595,172.88, 820,894.77 and 388,486.80

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Solution

The fourth proportional to 595,172.88, 820,894.77 and 388,486.80 is: 535,822.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    595,172.88 : 820,894.77 = 388,486.80 : x
  2. Step 2: Convert to fraction form
    595,172.88/820,894.77 = 388,486.80/x
  3. Step 3: Cross multiply
    595,172.88x = 820,894.77 × 388,486.80
  4. Step 4: Simplify right side
    595,172.88x = 318,906,782,334.04
  5. Step 5: Solve for x
    x = 318,906,782,334.04/595,172.88
  6. Step 6: Final answer
    x = 535,822.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.