Home / 687,804.75-949,258.04-385,998.75

Finding the Fourth Proportional to 687,804.75, 949,258.04 and 385,998.75

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Solution

The fourth proportional to 687,804.75, 949,258.04 and 385,998.75 is: 532,727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,804.75 : 949,258.04 = 385,998.75 : x
  2. Step 2: Convert to fraction form
    687,804.75/949,258.04 = 385,998.75/x
  3. Step 3: Cross multiply
    687,804.75x = 949,258.04 × 385,998.75
  4. Step 4: Simplify right side
    687,804.75x = 366,412,414,937.46
  5. Step 5: Solve for x
    x = 366,412,414,937.46/687,804.75
  6. Step 6: Final answer
    x = 532,727.37

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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.