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Finding the Fourth Proportional to 558,908.40, 838,918.80 and 259,456.80

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Solution

The fourth proportional to 558,908.40, 838,918.80 and 259,456.80 is: 389,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,908.40 : 838,918.80 = 259,456.80 : x
  2. Step 2: Convert to fraction form
    558,908.40/838,918.80 = 259,456.80/x
  3. Step 3: Cross multiply
    558,908.40x = 838,918.80 × 259,456.80
  4. Step 4: Simplify right side
    558,908.40x = 217,663,187,307.84
  5. Step 5: Solve for x
    x = 217,663,187,307.84/558,908.40
  6. Step 6: Final answer
    x = 389,443.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.