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Finding the Fourth Proportional to 688,426.74, 950,022 and 378,334.44

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Solution

The fourth proportional to 688,426.74, 950,022 and 378,334.44 is: 522,097.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,426.74 : 950,022 = 378,334.44 : x
  2. Step 2: Convert to fraction form
    688,426.74/950,022 = 378,334.44/x
  3. Step 3: Cross multiply
    688,426.74x = 950,022 × 378,334.44
  4. Step 4: Simplify right side
    688,426.74x = 359,426,041,357.68
  5. Step 5: Solve for x
    x = 359,426,041,357.68/688,426.74
  6. Step 6: Final answer
    x = 522,097.73

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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.