Home / 687,176.64-948,271.75-381,249.77

Finding the Fourth Proportional to 687,176.64, 948,271.75 and 381,249.77

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Solution

The fourth proportional to 687,176.64, 948,271.75 and 381,249.77 is: 526,106.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,176.64 : 948,271.75 = 381,249.77 : x
  2. Step 2: Convert to fraction form
    687,176.64/948,271.75 = 381,249.77/x
  3. Step 3: Cross multiply
    687,176.64x = 948,271.75 × 381,249.77
  4. Step 4: Simplify right side
    687,176.64x = 361,528,380,890.51
  5. Step 5: Solve for x
    x = 361,528,380,890.51/687,176.64
  6. Step 6: Final answer
    x = 526,106.91

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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.