Home / 905,721.45-1,358,746.20-455,308.80

Finding the Fourth Proportional to 905,721.45, 1,358,746.20 and 455,308.80

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Solution

The fourth proportional to 905,721.45, 1,358,746.20 and 455,308.80 is: 683,045.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,721.45 : 1,358,746.20 = 455,308.80 : x
  2. Step 2: Convert to fraction form
    905,721.45/1,358,746.20 = 455,308.80/x
  3. Step 3: Cross multiply
    905,721.45x = 1,358,746.20 × 455,308.80
  4. Step 4: Simplify right side
    905,721.45x = 618,649,101,826.56
  5. Step 5: Solve for x
    x = 618,649,101,826.56/905,721.45
  6. Step 6: Final answer
    x = 683,045.66

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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.