Home / 687,559.17-948,834.98-381,639.79

Finding the Fourth Proportional to 687,559.17, 948,834.98 and 381,639.79

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Solution

The fourth proportional to 687,559.17, 948,834.98 and 381,639.79 is: 526,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,559.17 : 948,834.98 = 381,639.79 : x
  2. Step 2: Convert to fraction form
    687,559.17/948,834.98 = 381,639.79/x
  3. Step 3: Cross multiply
    687,559.17x = 948,834.98 × 381,639.79
  4. Step 4: Simplify right side
    687,559.17x = 362,113,182,511.85
  5. Step 5: Solve for x
    x = 362,113,182,511.85/687,559.17
  6. Step 6: Final answer
    x = 526,664.76

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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.