Home / 687,714.84-949,050.32-381,786.36

Finding the Fourth Proportional to 687,714.84, 949,050.32 and 381,786.36

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Solution

The fourth proportional to 687,714.84, 949,050.32 and 381,786.36 is: 526,867.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,714.84 : 949,050.32 = 381,786.36 : x
  2. Step 2: Convert to fraction form
    687,714.84/949,050.32 = 381,786.36/x
  3. Step 3: Cross multiply
    687,714.84x = 949,050.32 × 381,786.36
  4. Step 4: Simplify right side
    687,714.84x = 362,334,467,129.64
  5. Step 5: Solve for x
    x = 362,334,467,129.64/687,714.84
  6. Step 6: Final answer
    x = 526,867.31

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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.