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Finding the Fourth Proportional to 637,889.92, 880,284 and 351,403.36

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Solution

The fourth proportional to 637,889.92, 880,284 and 351,403.36 is: 484,934.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,889.92 : 880,284 = 351,403.36 : x
  2. Step 2: Convert to fraction form
    637,889.92/880,284 = 351,403.36/x
  3. Step 3: Cross multiply
    637,889.92x = 880,284 × 351,403.36
  4. Step 4: Simplify right side
    637,889.92x = 309,334,755,354.24
  5. Step 5: Solve for x
    x = 309,334,755,354.24/637,889.92
  6. Step 6: Final answer
    x = 484,934.38

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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.