Home / 858,419.82-1,287,616.64-290,200.08

Finding the Fourth Proportional to 858,419.82, 1,287,616.64 and 290,200.08

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Solution

The fourth proportional to 858,419.82, 1,287,616.64 and 290,200.08 is: 435,295.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,419.82 : 1,287,616.64 = 290,200.08 : x
  2. Step 2: Convert to fraction form
    858,419.82/1,287,616.64 = 290,200.08/x
  3. Step 3: Cross multiply
    858,419.82x = 1,287,616.64 × 290,200.08
  4. Step 4: Simplify right side
    858,419.82x = 373,666,450,486.33
  5. Step 5: Solve for x
    x = 373,666,450,486.33/858,419.82
  6. Step 6: Final answer
    x = 435,295.69

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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.