Home / 687,558.74-948,812.94-381,634.29

Finding the Fourth Proportional to 687,558.74, 948,812.94 and 381,634.29

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Solution

The fourth proportional to 687,558.74, 948,812.94 and 381,634.29 is: 526,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,558.74 : 948,812.94 = 381,634.29 : x
  2. Step 2: Convert to fraction form
    687,558.74/948,812.94 = 381,634.29/x
  3. Step 3: Cross multiply
    687,558.74x = 948,812.94 × 381,634.29
  4. Step 4: Simplify right side
    687,558.74x = 362,099,552,699.71
  5. Step 5: Solve for x
    x = 362,099,552,699.71/687,558.74
  6. Step 6: Final answer
    x = 526,645.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.