Home / 687,826,093.35-949,175,073.65-420,349,414.58

Finding the Fourth Proportional to 687,826,093.35, 949,175,073.65 and 420,349,414.58

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Solution

The fourth proportional to 687,826,093.35, 949,175,073.65 and 420,349,414.58 is: 580,066,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,826,093.35 : 949,175,073.65 = 420,349,414.58 : x
  2. Step 2: Convert to fraction form
    687,826,093.35/949,175,073.65 = 420,349,414.58/x
  3. Step 3: Cross multiply
    687,826,093.35x = 949,175,073.65 × 420,349,414.58
  4. Step 4: Simplify right side
    687,826,093.35x = 398,985,186,542,705,856
  5. Step 5: Solve for x
    x = 398,985,186,542,705,856/687,826,093.35
  6. Step 6: Final answer
    x = 580,066,953.55

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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.