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Finding the Fourth Proportional to 654,223.80, 980,169.30 and 553,913.40

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Solution

The fourth proportional to 654,223.80, 980,169.30 and 553,913.40 is: 829,882.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,223.80 : 980,169.30 = 553,913.40 : x
  2. Step 2: Convert to fraction form
    654,223.80/980,169.30 = 553,913.40/x
  3. Step 3: Cross multiply
    654,223.80x = 980,169.30 × 553,913.40
  4. Step 4: Simplify right side
    654,223.80x = 542,928,909,538.62
  5. Step 5: Solve for x
    x = 542,928,909,538.62/654,223.80
  6. Step 6: Final answer
    x = 829,882.54

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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.