Home / 628,634.61-867,534.48-387,056.52

Finding the Fourth Proportional to 628,634.61, 867,534.48 and 387,056.52

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Solution

The fourth proportional to 628,634.61, 867,534.48 and 387,056.52 is: 534,149.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,634.61 : 867,534.48 = 387,056.52 : x
  2. Step 2: Convert to fraction form
    628,634.61/867,534.48 = 387,056.52/x
  3. Step 3: Cross multiply
    628,634.61x = 867,534.48 × 387,056.52
  4. Step 4: Simplify right side
    628,634.61x = 335,784,876,808.81
  5. Step 5: Solve for x
    x = 335,784,876,808.81/628,634.61
  6. Step 6: Final answer
    x = 534,149.52

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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.