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Finding the Fourth Proportional to 558,344.34, 768,570.39 and 486,599.94

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Solution

The fourth proportional to 558,344.34, 768,570.39 and 486,599.94 is: 669,813.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,344.34 : 768,570.39 = 486,599.94 : x
  2. Step 2: Convert to fraction form
    558,344.34/768,570.39 = 486,599.94/x
  3. Step 3: Cross multiply
    558,344.34x = 768,570.39 × 486,599.94
  4. Step 4: Simplify right side
    558,344.34x = 373,986,305,659.78
  5. Step 5: Solve for x
    x = 373,986,305,659.78/558,344.34
  6. Step 6: Final answer
    x = 669,813.01

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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.