Home / 1,284,696.20-1,926,276.30-786,417.80

Finding the Fourth Proportional to 1,284,696.20, 1,926,276.30 and 786,417.80

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Solution

The fourth proportional to 1,284,696.20, 1,926,276.30 and 786,417.80 is: 1,179,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,696.20 : 1,926,276.30 = 786,417.80 : x
  2. Step 2: Convert to fraction form
    1,284,696.20/1,926,276.30 = 786,417.80/x
  3. Step 3: Cross multiply
    1,284,696.20x = 1,926,276.30 × 786,417.80
  4. Step 4: Simplify right side
    1,284,696.20x = 1,514,857,970,038.14
  5. Step 5: Solve for x
    x = 1,514,857,970,038.14/1,284,696.20
  6. Step 6: Final answer
    x = 1,179,156.57

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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.