Home / 949,403.28-1,424,101.68-388,437.78

Finding the Fourth Proportional to 949,403.28, 1,424,101.68 and 388,437.78

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Solution

The fourth proportional to 949,403.28, 1,424,101.68 and 388,437.78 is: 582,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    949,403.28 : 1,424,101.68 = 388,437.78 : x
  2. Step 2: Convert to fraction form
    949,403.28/1,424,101.68 = 388,437.78/x
  3. Step 3: Cross multiply
    949,403.28x = 1,424,101.68 × 388,437.78
  4. Step 4: Simplify right side
    949,403.28x = 553,174,895,073.47
  5. Step 5: Solve for x
    x = 553,174,895,073.47/949,403.28
  6. Step 6: Final answer
    x = 582,655.34

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1.5x scale

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.