Home / 858,845.90-1,287,940.80-259,607.90

Finding the Fourth Proportional to 858,845.90, 1,287,940.80 and 259,607.90

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Solution

The fourth proportional to 858,845.90, 1,287,940.80 and 259,607.90 is: 389,312.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,845.90 : 1,287,940.80 = 259,607.90 : x
  2. Step 2: Convert to fraction form
    858,845.90/1,287,940.80 = 259,607.90/x
  3. Step 3: Cross multiply
    858,845.90x = 1,287,940.80 × 259,607.90
  4. Step 4: Simplify right side
    858,845.90x = 334,359,606,412.32
  5. Step 5: Solve for x
    x = 334,359,606,412.32/858,845.90
  6. Step 6: Final answer
    x = 389,312.69

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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.