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Finding the Fourth Proportional to 661,324.53, 912,699.21 and 374,813.86

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Solution

The fourth proportional to 661,324.53, 912,699.21 and 374,813.86 is: 517,283.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,324.53 : 912,699.21 = 374,813.86 : x
  2. Step 2: Convert to fraction form
    661,324.53/912,699.21 = 374,813.86/x
  3. Step 3: Cross multiply
    661,324.53x = 912,699.21 × 374,813.86
  4. Step 4: Simplify right side
    661,324.53x = 342,092,313,919.05
  5. Step 5: Solve for x
    x = 342,092,313,919.05/661,324.53
  6. Step 6: Final answer
    x = 517,283.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.