Home / 862,746.30-1,294,107.30-389,430.90

Finding the Fourth Proportional to 862,746.30, 1,294,107.30 and 389,430.90

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Solution

The fourth proportional to 862,746.30, 1,294,107.30 and 389,430.90 is: 584,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,746.30 : 1,294,107.30 = 389,430.90 : x
  2. Step 2: Convert to fraction form
    862,746.30/1,294,107.30 = 389,430.90/x
  3. Step 3: Cross multiply
    862,746.30x = 1,294,107.30 × 389,430.90
  4. Step 4: Simplify right side
    862,746.30x = 503,965,370,535.57
  5. Step 5: Solve for x
    x = 503,965,370,535.57/862,746.30
  6. Step 6: Final answer
    x = 584,140.87

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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.