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Finding the Fourth Proportional to 553,013.20, 829,519.80 and 384,176.80

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Solution

The fourth proportional to 553,013.20, 829,519.80 and 384,176.80 is: 576,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,013.20 : 829,519.80 = 384,176.80 : x
  2. Step 2: Convert to fraction form
    553,013.20/829,519.80 = 384,176.80/x
  3. Step 3: Cross multiply
    553,013.20x = 829,519.80 × 384,176.80
  4. Step 4: Simplify right side
    553,013.20x = 318,682,262,300.64
  5. Step 5: Solve for x
    x = 318,682,262,300.64/553,013.20
  6. Step 6: Final answer
    x = 576,265.20

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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.