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Finding the Fourth Proportional to 638,275.77, 880,757.48 and 380,101.37

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Solution

The fourth proportional to 638,275.77, 880,757.48 and 380,101.37 is: 524,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,275.77 : 880,757.48 = 380,101.37 : x
  2. Step 2: Convert to fraction form
    638,275.77/880,757.48 = 380,101.37/x
  3. Step 3: Cross multiply
    638,275.77x = 880,757.48 × 380,101.37
  4. Step 4: Simplify right side
    638,275.77x = 334,777,121,332.21
  5. Step 5: Solve for x
    x = 334,777,121,332.21/638,275.77
  6. Step 6: Final answer
    x = 524,502.32

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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.