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Finding the Fourth Proportional to 868,008.30, 1,302,012.45 and 860,135.10

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Solution

The fourth proportional to 868,008.30, 1,302,012.45 and 860,135.10 is: 1,290,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,008.30 : 1,302,012.45 = 860,135.10 : x
  2. Step 2: Convert to fraction form
    868,008.30/1,302,012.45 = 860,135.10/x
  3. Step 3: Cross multiply
    868,008.30x = 1,302,012.45 × 860,135.10
  4. Step 4: Simplify right side
    868,008.30x = 1,119,906,608,881.99
  5. Step 5: Solve for x
    x = 1,119,906,608,881.99/868,008.30
  6. Step 6: Final answer
    x = 1,290,202.65

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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.