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Finding the Fourth Proportional to 907,521.90, 1,361,282.85 and 866,187.60

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Solution

The fourth proportional to 907,521.90, 1,361,282.85 and 866,187.60 is: 1,299,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,521.90 : 1,361,282.85 = 866,187.60 : x
  2. Step 2: Convert to fraction form
    907,521.90/1,361,282.85 = 866,187.60/x
  3. Step 3: Cross multiply
    907,521.90x = 1,361,282.85 × 866,187.60
  4. Step 4: Simplify right side
    907,521.90x = 1,179,126,324,762.66
  5. Step 5: Solve for x
    x = 1,179,126,324,762.66/907,521.90
  6. Step 6: Final answer
    x = 1,299,281.40

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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.