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Finding the Fourth Proportional to 673,543.72, 929,481.78 and 371,718.28

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Solution

The fourth proportional to 673,543.72, 929,481.78 and 371,718.28 is: 512,966.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,543.72 : 929,481.78 = 371,718.28 : x
  2. Step 2: Convert to fraction form
    673,543.72/929,481.78 = 371,718.28/x
  3. Step 3: Cross multiply
    673,543.72x = 929,481.78 × 371,718.28
  4. Step 4: Simplify right side
    673,543.72x = 345,505,368,552.94
  5. Step 5: Solve for x
    x = 345,505,368,552.94/673,543.72
  6. Step 6: Final answer
    x = 512,966.51

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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.