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Finding the Fourth Proportional to 991,440.80, 1,485,522.80 and 843,984.80

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Solution

The fourth proportional to 991,440.80, 1,485,522.80 and 843,984.80 is: 1,264,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,440.80 : 1,485,522.80 = 843,984.80 : x
  2. Step 2: Convert to fraction form
    991,440.80/1,485,522.80 = 843,984.80/x
  3. Step 3: Cross multiply
    991,440.80x = 1,485,522.80 × 843,984.80
  4. Step 4: Simplify right side
    991,440.80x = 1,253,758,663,253.44
  5. Step 5: Solve for x
    x = 1,253,758,663,253.44/991,440.80
  6. Step 6: Final answer
    x = 1,264,582.48

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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.