Home / 855,853.93-1,284,020.88-343,878.58

Finding the Fourth Proportional to 855,853.93, 1,284,020.88 and 343,878.58

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Solution

The fourth proportional to 855,853.93, 1,284,020.88 and 343,878.58 is: 515,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,853.93 : 1,284,020.88 = 343,878.58 : x
  2. Step 2: Convert to fraction form
    855,853.93/1,284,020.88 = 343,878.58/x
  3. Step 3: Cross multiply
    855,853.93x = 1,284,020.88 × 343,878.58
  4. Step 4: Simplify right side
    855,853.93x = 441,547,276,904.75
  5. Step 5: Solve for x
    x = 441,547,276,904.75/855,853.93
  6. Step 6: Final answer
    x = 515,914.29

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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.