Home / 745,086.85-1,117,640.53-212,607.71

Finding the Fourth Proportional to 745,086.85, 1,117,640.53 and 212,607.71

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Solution

The fourth proportional to 745,086.85, 1,117,640.53 and 212,607.71 is: 318,914.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,086.85 : 1,117,640.53 = 212,607.71 : x
  2. Step 2: Convert to fraction form
    745,086.85/1,117,640.53 = 212,607.71/x
  3. Step 3: Cross multiply
    745,086.85x = 1,117,640.53 × 212,607.71
  4. Step 4: Simplify right side
    745,086.85x = 237,618,995,698.56
  5. Step 5: Solve for x
    x = 237,618,995,698.56/745,086.85
  6. Step 6: Final answer
    x = 318,914.49

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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.