Home / 862,511.20-1,293,766.80-389,730.40

Finding the Fourth Proportional to 862,511.20, 1,293,766.80 and 389,730.40

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Solution

The fourth proportional to 862,511.20, 1,293,766.80 and 389,730.40 is: 584,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,511.20 : 1,293,766.80 = 389,730.40 : x
  2. Step 2: Convert to fraction form
    862,511.20/1,293,766.80 = 389,730.40/x
  3. Step 3: Cross multiply
    862,511.20x = 1,293,766.80 × 389,730.40
  4. Step 4: Simplify right side
    862,511.20x = 504,220,252,470.72
  5. Step 5: Solve for x
    x = 504,220,252,470.72/862,511.20
  6. Step 6: Final answer
    x = 584,595.60

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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.