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Finding the Fourth Proportional to 654,220.80, 980,164.80 and 553,910.40

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Solution

The fourth proportional to 654,220.80, 980,164.80 and 553,910.40 is: 829,878.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,220.80 : 980,164.80 = 553,910.40 : x
  2. Step 2: Convert to fraction form
    654,220.80/980,164.80 = 553,910.40/x
  3. Step 3: Cross multiply
    654,220.80x = 980,164.80 × 553,910.40
  4. Step 4: Simplify right side
    654,220.80x = 542,923,476,433.92
  5. Step 5: Solve for x
    x = 542,923,476,433.92/654,220.80
  6. Step 6: Final answer
    x = 829,878.04

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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.