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Finding the Fourth Proportional to 860,150.90, 1,290,809.55 and 559,900.10

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Solution

The fourth proportional to 860,150.90, 1,290,809.55 and 559,900.10 is: 840,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,150.90 : 1,290,809.55 = 559,900.10 : x
  2. Step 2: Convert to fraction form
    860,150.90/1,290,809.55 = 559,900.10/x
  3. Step 3: Cross multiply
    860,150.90x = 1,290,809.55 × 559,900.10
  4. Step 4: Simplify right side
    860,150.90x = 722,724,396,125.96
  5. Step 5: Solve for x
    x = 722,724,396,125.96/860,150.90
  6. Step 6: Final answer
    x = 840,229.77

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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.