Home / 905,718.45-1,358,741.70-455,305.80

Finding the Fourth Proportional to 905,718.45, 1,358,741.70 and 455,305.80

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Solution

The fourth proportional to 905,718.45, 1,358,741.70 and 455,305.80 is: 683,041.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,718.45 : 1,358,741.70 = 455,305.80 : x
  2. Step 2: Convert to fraction form
    905,718.45/1,358,741.70 = 455,305.80/x
  3. Step 3: Cross multiply
    905,718.45x = 1,358,741.70 × 455,305.80
  4. Step 4: Simplify right side
    905,718.45x = 618,642,976,711.86
  5. Step 5: Solve for x
    x = 618,642,976,711.86/905,718.45
  6. Step 6: Final answer
    x = 683,041.16

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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.