Home / 558,426.07-768,682.47-486,682.75

Finding the Fourth Proportional to 558,426.07, 768,682.47 and 486,682.75

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Solution

The fourth proportional to 558,426.07, 768,682.47 and 486,682.75 is: 669,926.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,426.07 : 768,682.47 = 486,682.75 : x
  2. Step 2: Convert to fraction form
    558,426.07/768,682.47 = 486,682.75/x
  3. Step 3: Cross multiply
    558,426.07x = 768,682.47 × 486,682.75
  4. Step 4: Simplify right side
    558,426.07x = 374,104,498,376.39
  5. Step 5: Solve for x
    x = 374,104,498,376.39/558,426.07
  6. Step 6: Final answer
    x = 669,926.64

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Double scale
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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.