Home / 687,555.68-948,812.13-381,614.22

Finding the Fourth Proportional to 687,555.68, 948,812.13 and 381,614.22

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Solution

The fourth proportional to 687,555.68, 948,812.13 and 381,614.22 is: 526,619.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,555.68 : 948,812.13 = 381,614.22 : x
  2. Step 2: Convert to fraction form
    687,555.68/948,812.13 = 381,614.22/x
  3. Step 3: Cross multiply
    687,555.68x = 948,812.13 × 381,614.22
  4. Step 4: Simplify right side
    687,555.68x = 362,080,200,916.49
  5. Step 5: Solve for x
    x = 362,080,200,916.49/687,555.68
  6. Step 6: Final answer
    x = 526,619.46

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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.