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Finding the Fourth Proportional to 486,049, 670,773.54 and 284,909.80

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Solution

The fourth proportional to 486,049, 670,773.54 and 284,909.80 is: 393,190.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,049 : 670,773.54 = 284,909.80 : x
  2. Step 2: Convert to fraction form
    486,049/670,773.54 = 284,909.80/x
  3. Step 3: Cross multiply
    486,049x = 670,773.54 × 284,909.80
  4. Step 4: Simplify right side
    486,049x = 191,109,955,126.69
  5. Step 5: Solve for x
    x = 191,109,955,126.69/486,049
  6. Step 6: Final answer
    x = 393,190.72

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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.