Home / 723,314.54-1,085,321.73-442,678.70

Finding the Fourth Proportional to 723,314.54, 1,085,321.73 and 442,678.70

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Solution

The fourth proportional to 723,314.54, 1,085,321.73 and 442,678.70 is: 664,232.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,314.54 : 1,085,321.73 = 442,678.70 : x
  2. Step 2: Convert to fraction form
    723,314.54/1,085,321.73 = 442,678.70/x
  3. Step 3: Cross multiply
    723,314.54x = 1,085,321.73 × 442,678.70
  4. Step 4: Simplify right side
    723,314.54x = 480,448,812,518.15
  5. Step 5: Solve for x
    x = 480,448,812,518.15/723,314.54
  6. Step 6: Final answer
    x = 664,232.21

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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.