Home / 638,110.06-880,597.78-351,640.40

Finding the Fourth Proportional to 638,110.06, 880,597.78 and 351,640.40

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Solution

The fourth proportional to 638,110.06, 880,597.78 and 351,640.40 is: 485,267.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,110.06 : 880,597.78 = 351,640.40 : x
  2. Step 2: Convert to fraction form
    638,110.06/880,597.78 = 351,640.40/x
  3. Step 3: Cross multiply
    638,110.06x = 880,597.78 × 351,640.40
  4. Step 4: Simplify right side
    638,110.06x = 309,653,755,598.31
  5. Step 5: Solve for x
    x = 309,653,755,598.31/638,110.06
  6. Step 6: Final answer
    x = 485,267.00

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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.