Home / 687,256.22-1,030,470.02-308,108.38

Finding the Fourth Proportional to 687,256.22, 1,030,470.02 and 308,108.38

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Solution

The fourth proportional to 687,256.22, 1,030,470.02 and 308,108.38 is: 461,976.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,256.22 : 1,030,470.02 = 308,108.38 : x
  2. Step 2: Convert to fraction form
    687,256.22/1,030,470.02 = 308,108.38/x
  3. Step 3: Cross multiply
    687,256.22x = 1,030,470.02 × 308,108.38
  4. Step 4: Simplify right side
    687,256.22x = 317,496,448,500.77
  5. Step 5: Solve for x
    x = 317,496,448,500.77/687,256.22
  6. Step 6: Final answer
    x = 461,976.83

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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.