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Finding the Fourth Proportional to 547,813.60, 821,720.40 and 359,807.20

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Solution

The fourth proportional to 547,813.60, 821,720.40 and 359,807.20 is: 539,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,813.60 : 821,720.40 = 359,807.20 : x
  2. Step 2: Convert to fraction form
    547,813.60/821,720.40 = 359,807.20/x
  3. Step 3: Cross multiply
    547,813.60x = 821,720.40 × 359,807.20
  4. Step 4: Simplify right side
    547,813.60x = 295,660,916,306.88
  5. Step 5: Solve for x
    x = 295,660,916,306.88/547,813.60
  6. Step 6: Final answer
    x = 539,710.80

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Similar ratio
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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.