Home / 860,269.51-1,290,320.38-261,235.86

Finding the Fourth Proportional to 860,269.51, 1,290,320.38 and 261,235.86

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Solution

The fourth proportional to 860,269.51, 1,290,320.38 and 261,235.86 is: 391,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,269.51 : 1,290,320.38 = 261,235.86 : x
  2. Step 2: Convert to fraction form
    860,269.51/1,290,320.38 = 261,235.86/x
  3. Step 3: Cross multiply
    860,269.51x = 1,290,320.38 × 261,235.86
  4. Step 4: Simplify right side
    860,269.51x = 337,077,953,261.70
  5. Step 5: Solve for x
    x = 337,077,953,261.70/860,269.51
  6. Step 6: Final answer
    x = 391,828.32

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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.