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Finding the Fourth Proportional to 888,090, 1,225,593.36 and 485,682

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Solution

The fourth proportional to 888,090, 1,225,593.36 and 485,682 is: 670,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,090 : 1,225,593.36 = 485,682 : x
  2. Step 2: Convert to fraction form
    888,090/1,225,593.36 = 485,682/x
  3. Step 3: Cross multiply
    888,090x = 1,225,593.36 × 485,682
  4. Step 4: Simplify right side
    888,090x = 595,248,634,271.52
  5. Step 5: Solve for x
    x = 595,248,634,271.52/888,090
  6. Step 6: Final answer
    x = 670,257.11

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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.