Home / 738,904.28-1,019,688.06-399,371.48

Finding the Fourth Proportional to 738,904.28, 1,019,688.06 and 399,371.48

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Solution

The fourth proportional to 738,904.28, 1,019,688.06 and 399,371.48 is: 551,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,904.28 : 1,019,688.06 = 399,371.48 : x
  2. Step 2: Convert to fraction form
    738,904.28/1,019,688.06 = 399,371.48/x
  3. Step 3: Cross multiply
    738,904.28x = 1,019,688.06 × 399,371.48
  4. Step 4: Simplify right side
    738,904.28x = 407,234,329,660.53
  5. Step 5: Solve for x
    x = 407,234,329,660.53/738,904.28
  6. Step 6: Final answer
    x = 551,132.73

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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.