Home / 820,941.86-1,231,454.28-315,325.58

Finding the Fourth Proportional to 820,941.86, 1,231,454.28 and 315,325.58

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Solution

The fourth proportional to 820,941.86, 1,231,454.28 and 315,325.58 is: 473,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,941.86 : 1,231,454.28 = 315,325.58 : x
  2. Step 2: Convert to fraction form
    820,941.86/1,231,454.28 = 315,325.58/x
  3. Step 3: Cross multiply
    820,941.86x = 1,231,454.28 × 315,325.58
  4. Step 4: Simplify right side
    820,941.86x = 388,309,035,084.48
  5. Step 5: Solve for x
    x = 388,309,035,084.48/820,941.86
  6. Step 6: Final answer
    x = 473,004.31

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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.