Home / 856,638.60-1,284,053.69-287,480.06

Finding the Fourth Proportional to 856,638.60, 1,284,053.69 and 287,480.06

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Solution

The fourth proportional to 856,638.60, 1,284,053.69 and 287,480.06 is: 430,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,638.60 : 1,284,053.69 = 287,480.06 : x
  2. Step 2: Convert to fraction form
    856,638.60/1,284,053.69 = 287,480.06/x
  3. Step 3: Cross multiply
    856,638.60x = 1,284,053.69 × 287,480.06
  4. Step 4: Simplify right side
    856,638.60x = 369,139,826,142.85
  5. Step 5: Solve for x
    x = 369,139,826,142.85/856,638.60
  6. Step 6: Final answer
    x = 430,916.64

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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.