Home / 638,187.30-880,698.48-351,707.38

Finding the Fourth Proportional to 638,187.30, 880,698.48 and 351,707.38

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Solution

The fourth proportional to 638,187.30, 880,698.48 and 351,707.38 is: 485,356.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,187.30 : 880,698.48 = 351,707.38 : x
  2. Step 2: Convert to fraction form
    638,187.30/880,698.48 = 351,707.38/x
  3. Step 3: Cross multiply
    638,187.30x = 880,698.48 × 351,707.38
  4. Step 4: Simplify right side
    638,187.30x = 309,748,154,970.78
  5. Step 5: Solve for x
    x = 309,748,154,970.78/638,187.30
  6. Step 6: Final answer
    x = 485,356.19

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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.