Home / 715,557,612.60-1,072,539,257.40-278,713,110.60

Finding the Fourth Proportional to 715,557,612.60, 1,072,539,257.40 and 278,713,110.60

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Solution

The fourth proportional to 715,557,612.60, 1,072,539,257.40 and 278,713,110.60 is: 417,759,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,557,612.60 : 1,072,539,257.40 = 278,713,110.60 : x
  2. Step 2: Convert to fraction form
    715,557,612.60/1,072,539,257.40 = 278,713,110.60/x
  3. Step 3: Cross multiply
    715,557,612.60x = 1,072,539,257.40 × 278,713,110.60
  4. Step 4: Simplify right side
    715,557,612.60x = 298,930,752,670,568,064
  5. Step 5: Solve for x
    x = 298,930,752,670,568,064/715,557,612.60
  6. Step 6: Final answer
    x = 417,759,167.69

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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.