Home / 628,696.96-867,714.24-402,334.72

Finding the Fourth Proportional to 628,696.96, 867,714.24 and 402,334.72

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Solution

The fourth proportional to 628,696.96, 867,714.24 and 402,334.72 is: 555,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,696.96 : 867,714.24 = 402,334.72 : x
  2. Step 2: Convert to fraction form
    628,696.96/867,714.24 = 402,334.72/x
  3. Step 3: Cross multiply
    628,696.96x = 867,714.24 × 402,334.72
  4. Step 4: Simplify right side
    628,696.96x = 349,111,565,790.41
  5. Step 5: Solve for x
    x = 349,111,565,790.41/628,696.96
  6. Step 6: Final answer
    x = 555,293.87

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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.