Home / 810,400.32-1,118,419.79-447,894.95

Finding the Fourth Proportional to 810,400.32, 1,118,419.79 and 447,894.95

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Solution

The fourth proportional to 810,400.32, 1,118,419.79 and 447,894.95 is: 618,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,400.32 : 1,118,419.79 = 447,894.95 : x
  2. Step 2: Convert to fraction form
    810,400.32/1,118,419.79 = 447,894.95/x
  3. Step 3: Cross multiply
    810,400.32x = 1,118,419.79 × 447,894.95
  4. Step 4: Simplify right side
    810,400.32x = 500,934,568,089.49
  5. Step 5: Solve for x
    x = 500,934,568,089.49/810,400.32
  6. Step 6: Final answer
    x = 618,132.24

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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.