Home / 687,256.37-1,030,470.39-308,108.53

Finding the Fourth Proportional to 687,256.37, 1,030,470.39 and 308,108.53

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Solution

The fourth proportional to 687,256.37, 1,030,470.39 and 308,108.53 is: 461,977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,256.37 : 1,030,470.39 = 308,108.53 : x
  2. Step 2: Convert to fraction form
    687,256.37/1,030,470.39 = 308,108.53/x
  3. Step 3: Cross multiply
    687,256.37x = 1,030,470.39 × 308,108.53
  4. Step 4: Simplify right side
    687,256.37x = 317,496,718,359.52
  5. Step 5: Solve for x
    x = 317,496,718,359.52/687,256.37
  6. Step 6: Final answer
    x = 461,977.12

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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.