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Finding the Fourth Proportional to 710,589.80, 980,669.82 and 404,679.12

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Solution

The fourth proportional to 710,589.80, 980,669.82 and 404,679.12 is: 558,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,589.80 : 980,669.82 = 404,679.12 : x
  2. Step 2: Convert to fraction form
    710,589.80/980,669.82 = 404,679.12/x
  3. Step 3: Cross multiply
    710,589.80x = 980,669.82 × 404,679.12
  4. Step 4: Simplify right side
    710,589.80x = 396,856,599,768.16
  5. Step 5: Solve for x
    x = 396,856,599,768.16/710,589.80
  6. Step 6: Final answer
    x = 558,489.02

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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.