Home / 638,150.51-880,666.17-351,689.04

Finding the Fourth Proportional to 638,150.51, 880,666.17 and 351,689.04

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Solution

The fourth proportional to 638,150.51, 880,666.17 and 351,689.04 is: 485,341.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,150.51 : 880,666.17 = 351,689.04 : x
  2. Step 2: Convert to fraction form
    638,150.51/880,666.17 = 351,689.04/x
  3. Step 3: Cross multiply
    638,150.51x = 880,666.17 × 351,689.04
  4. Step 4: Simplify right side
    638,150.51x = 309,720,639,887.78
  5. Step 5: Solve for x
    x = 309,720,639,887.78/638,150.51
  6. Step 6: Final answer
    x = 485,341.06

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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.