Home / 990,875.73-1,486,138.64-391,637.73

Finding the Fourth Proportional to 990,875.73, 1,486,138.64 and 391,637.73

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Solution

The fourth proportional to 990,875.73, 1,486,138.64 and 391,637.73 is: 587,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,875.73 : 1,486,138.64 = 391,637.73 : x
  2. Step 2: Convert to fraction form
    990,875.73/1,486,138.64 = 391,637.73/x
  3. Step 3: Cross multiply
    990,875.73x = 1,486,138.64 × 391,637.73
  4. Step 4: Simplify right side
    990,875.73x = 582,027,961,476.70
  5. Step 5: Solve for x
    x = 582,027,961,476.70/990,875.73
  6. Step 6: Final answer
    x = 587,387.44

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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.