Home / 860,004.12-1,290,006.40-252,792.45

Finding the Fourth Proportional to 860,004.12, 1,290,006.40 and 252,792.45

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Solution

The fourth proportional to 860,004.12, 1,290,006.40 and 252,792.45 is: 379,188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,004.12 : 1,290,006.40 = 252,792.45 : x
  2. Step 2: Convert to fraction form
    860,004.12/1,290,006.40 = 252,792.45/x
  3. Step 3: Cross multiply
    860,004.12x = 1,290,006.40 × 252,792.45
  4. Step 4: Simplify right side
    860,004.12x = 326,103,878,371.68
  5. Step 5: Solve for x
    x = 326,103,878,371.68/860,004.12
  6. Step 6: Final answer
    x = 379,188.74

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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.