Home / 687,496.70-948,742.14-381,576.74

Finding the Fourth Proportional to 687,496.70, 948,742.14 and 381,576.74

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Solution

The fourth proportional to 687,496.70, 948,742.14 and 381,576.74 is: 526,574.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,496.70 : 948,742.14 = 381,576.74 : x
  2. Step 2: Convert to fraction form
    687,496.70/948,742.14 = 381,576.74/x
  3. Step 3: Cross multiply
    687,496.70x = 948,742.14 × 381,576.74
  4. Step 4: Simplify right side
    687,496.70x = 362,017,932,881.82
  5. Step 5: Solve for x
    x = 362,017,932,881.82/687,496.70
  6. Step 6: Final answer
    x = 526,574.07

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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.