Home / 858,435.98-1,287,859.10-259,403.11

Finding the Fourth Proportional to 858,435.98, 1,287,859.10 and 259,403.11

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Solution

The fourth proportional to 858,435.98, 1,287,859.10 and 259,403.11 is: 389,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,435.98 : 1,287,859.10 = 259,403.11 : x
  2. Step 2: Convert to fraction form
    858,435.98/1,287,859.10 = 259,403.11/x
  3. Step 3: Cross multiply
    858,435.98x = 1,287,859.10 × 259,403.11
  4. Step 4: Simplify right side
    858,435.98x = 334,074,651,265.14
  5. Step 5: Solve for x
    x = 334,074,651,265.14/858,435.98
  6. Step 6: Final answer
    x = 389,166.65

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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.