Home / 687,477.98-948,705.35-381,536.60

Finding the Fourth Proportional to 687,477.98, 948,705.35 and 381,536.60

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Solution

The fourth proportional to 687,477.98, 948,705.35 and 381,536.60 is: 526,512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,477.98 : 948,705.35 = 381,536.60 : x
  2. Step 2: Convert to fraction form
    687,477.98/948,705.35 = 381,536.60/x
  3. Step 3: Cross multiply
    687,477.98x = 948,705.35 × 381,536.60
  4. Step 4: Simplify right side
    687,477.98x = 361,965,806,989.60
  5. Step 5: Solve for x
    x = 361,965,806,989.60/687,477.98
  6. Step 6: Final answer
    x = 526,512.58

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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.