Home / 856,505.40-1,284,758.10-501,919.80

Finding the Fourth Proportional to 856,505.40, 1,284,758.10 and 501,919.80

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Solution

The fourth proportional to 856,505.40, 1,284,758.10 and 501,919.80 is: 752,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,505.40 : 1,284,758.10 = 501,919.80 : x
  2. Step 2: Convert to fraction form
    856,505.40/1,284,758.10 = 501,919.80/x
  3. Step 3: Cross multiply
    856,505.40x = 1,284,758.10 × 501,919.80
  4. Step 4: Simplify right side
    856,505.40x = 644,845,528,600.38
  5. Step 5: Solve for x
    x = 644,845,528,600.38/856,505.40
  6. Step 6: Final answer
    x = 752,879.70

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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.