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Finding the Fourth Proportional to 888,630, 1,226,309.40 and 486,222

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Solution

The fourth proportional to 888,630, 1,226,309.40 and 486,222 is: 670,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,630 : 1,226,309.40 = 486,222 : x
  2. Step 2: Convert to fraction form
    888,630/1,226,309.40 = 486,222/x
  3. Step 3: Cross multiply
    888,630x = 1,226,309.40 × 486,222
  4. Step 4: Simplify right side
    888,630x = 596,258,609,086.80
  5. Step 5: Solve for x
    x = 596,258,609,086.80/888,630
  6. Step 6: Final answer
    x = 670,986.36

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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.