Home / 840,136.72-1,159,478.58-513,641.29

Finding the Fourth Proportional to 840,136.72, 1,159,478.58 and 513,641.29

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Solution

The fourth proportional to 840,136.72, 1,159,478.58 and 513,641.29 is: 708,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,136.72 : 1,159,478.58 = 513,641.29 : x
  2. Step 2: Convert to fraction form
    840,136.72/1,159,478.58 = 513,641.29/x
  3. Step 3: Cross multiply
    840,136.72x = 1,159,478.58 × 513,641.29
  4. Step 4: Simplify right side
    840,136.72x = 595,556,073,558.57
  5. Step 5: Solve for x
    x = 595,556,073,558.57/840,136.72
  6. Step 6: Final answer
    x = 708,879.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.