Home / 547,981.20-821,971.80-359,024.40

Finding the Fourth Proportional to 547,981.20, 821,971.80 and 359,024.40

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Solution

The fourth proportional to 547,981.20, 821,971.80 and 359,024.40 is: 538,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,981.20 : 821,971.80 = 359,024.40 : x
  2. Step 2: Convert to fraction form
    547,981.20/821,971.80 = 359,024.40/x
  3. Step 3: Cross multiply
    547,981.20x = 821,971.80 × 359,024.40
  4. Step 4: Simplify right side
    547,981.20x = 295,107,932,311.92
  5. Step 5: Solve for x
    x = 295,107,932,311.92/547,981.20
  6. Step 6: Final answer
    x = 538,536.60

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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.