Home / 628,056.17-941,727.50-428,618.17

Finding the Fourth Proportional to 628,056.17, 941,727.50 and 428,618.17

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Solution

The fourth proportional to 628,056.17, 941,727.50 and 428,618.17 is: 642,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,056.17 : 941,727.50 = 428,618.17 : x
  2. Step 2: Convert to fraction form
    628,056.17/941,727.50 = 428,618.17/x
  3. Step 3: Cross multiply
    628,056.17x = 941,727.50 × 428,618.17
  4. Step 4: Simplify right side
    628,056.17x = 403,641,517,688.68
  5. Step 5: Solve for x
    x = 403,641,517,688.68/628,056.17
  6. Step 6: Final answer
    x = 642,683.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.