Home / 726,709.60-1,090,712.40-426,815.20

Finding the Fourth Proportional to 726,709.60, 1,090,712.40 and 426,815.20

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Solution

The fourth proportional to 726,709.60, 1,090,712.40 and 426,815.20 is: 640,603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,709.60 : 1,090,712.40 = 426,815.20 : x
  2. Step 2: Convert to fraction form
    726,709.60/1,090,712.40 = 426,815.20/x
  3. Step 3: Cross multiply
    726,709.60x = 1,090,712.40 × 426,815.20
  4. Step 4: Simplify right side
    726,709.60x = 465,532,631,148.48
  5. Step 5: Solve for x
    x = 465,532,631,148.48/726,709.60
  6. Step 6: Final answer
    x = 640,603.39

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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.