Home / 628,697.96-867,715.62-402,335.72

Finding the Fourth Proportional to 628,697.96, 867,715.62 and 402,335.72

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Solution

The fourth proportional to 628,697.96, 867,715.62 and 402,335.72 is: 555,295.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,697.96 : 867,715.62 = 402,335.72 : x
  2. Step 2: Convert to fraction form
    628,697.96/867,715.62 = 402,335.72/x
  3. Step 3: Cross multiply
    628,697.96x = 867,715.62 × 402,335.72
  4. Step 4: Simplify right side
    628,697.96x = 349,112,988,727.95
  5. Step 5: Solve for x
    x = 349,112,988,727.95/628,697.96
  6. Step 6: Final answer
    x = 555,295.25

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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.