Home / 912,399.48-1,368,131.94-486,178.20

Finding the Fourth Proportional to 912,399.48, 1,368,131.94 and 486,178.20

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Solution

The fourth proportional to 912,399.48, 1,368,131.94 and 486,178.20 is: 729,018.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,399.48 : 1,368,131.94 = 486,178.20 : x
  2. Step 2: Convert to fraction form
    912,399.48/1,368,131.94 = 486,178.20/x
  3. Step 3: Cross multiply
    912,399.48x = 1,368,131.94 × 486,178.20
  4. Step 4: Simplify right side
    912,399.48x = 665,155,923,951.71
  5. Step 5: Solve for x
    x = 665,155,923,951.71/912,399.48
  6. Step 6: Final answer
    x = 729,018.31

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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.