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Finding the Fourth Proportional to 868,002.30, 1,302,003.45 and 860,129.10

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Solution

The fourth proportional to 868,002.30, 1,302,003.45 and 860,129.10 is: 1,290,193.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,002.30 : 1,302,003.45 = 860,129.10 : x
  2. Step 2: Convert to fraction form
    868,002.30/1,302,003.45 = 860,129.10/x
  3. Step 3: Cross multiply
    868,002.30x = 1,302,003.45 × 860,129.10
  4. Step 4: Simplify right side
    868,002.30x = 1,119,891,055,645.40
  5. Step 5: Solve for x
    x = 1,119,891,055,645.40/868,002.30
  6. Step 6: Final answer
    x = 1,290,193.65

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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.