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Finding the Fourth Proportional to 508,426.77, 700,282.07 and 378,950.31

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Solution

The fourth proportional to 508,426.77, 700,282.07 and 378,950.31 is: 521,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,426.77 : 700,282.07 = 378,950.31 : x
  2. Step 2: Convert to fraction form
    508,426.77/700,282.07 = 378,950.31/x
  3. Step 3: Cross multiply
    508,426.77x = 700,282.07 × 378,950.31
  4. Step 4: Simplify right side
    508,426.77x = 265,372,107,513.94
  5. Step 5: Solve for x
    x = 265,372,107,513.94/508,426.77
  6. Step 6: Final answer
    x = 521,947.55

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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.