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Finding the Fourth Proportional to 673,315.75, 929,175.78 and 371,509.75

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Solution

The fourth proportional to 673,315.75, 929,175.78 and 371,509.75 is: 512,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,315.75 : 929,175.78 = 371,509.75 : x
  2. Step 2: Convert to fraction form
    673,315.75/929,175.78 = 371,509.75/x
  3. Step 3: Cross multiply
    673,315.75x = 929,175.78 × 371,509.75
  4. Step 4: Simplify right side
    673,315.75x = 345,197,861,733.86
  5. Step 5: Solve for x
    x = 345,197,861,733.86/673,315.75
  6. Step 6: Final answer
    x = 512,683.48

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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.