Home / 860,678.10-1,290,970.42-261,592.55

Finding the Fourth Proportional to 860,678.10, 1,290,970.42 and 261,592.55

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Solution

The fourth proportional to 860,678.10, 1,290,970.42 and 261,592.55 is: 392,374.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,678.10 : 1,290,970.42 = 261,592.55 : x
  2. Step 2: Convert to fraction form
    860,678.10/1,290,970.42 = 261,592.55/x
  3. Step 3: Cross multiply
    860,678.10x = 1,290,970.42 × 261,592.55
  4. Step 4: Simplify right side
    860,678.10x = 337,708,244,142.37
  5. Step 5: Solve for x
    x = 337,708,244,142.37/860,678.10
  6. Step 6: Final answer
    x = 392,374.62

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1.5x scale

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.