Home / 687,225.05-948,484.32-381,399.65

Finding the Fourth Proportional to 687,225.05, 948,484.32 and 381,399.65

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Solution

The fourth proportional to 687,225.05, 948,484.32 and 381,399.65 is: 526,394.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,225.05 : 948,484.32 = 381,399.65 : x
  2. Step 2: Convert to fraction form
    687,225.05/948,484.32 = 381,399.65/x
  3. Step 3: Cross multiply
    687,225.05x = 948,484.32 × 381,399.65
  4. Step 4: Simplify right side
    687,225.05x = 361,751,587,678.49
  5. Step 5: Solve for x
    x = 361,751,587,678.49/687,225.05
  6. Step 6: Final answer
    x = 526,394.65

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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.