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Finding the Fourth Proportional to 547,600.20, 821,400.30 and 358,643.40

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Solution

The fourth proportional to 547,600.20, 821,400.30 and 358,643.40 is: 537,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,600.20 : 821,400.30 = 358,643.40 : x
  2. Step 2: Convert to fraction form
    547,600.20/821,400.30 = 358,643.40/x
  3. Step 3: Cross multiply
    547,600.20x = 821,400.30 × 358,643.40
  4. Step 4: Simplify right side
    547,600.20x = 294,589,796,353.02
  5. Step 5: Solve for x
    x = 294,589,796,353.02/547,600.20
  6. Step 6: Final answer
    x = 537,965.10

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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.