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Finding the Fourth Proportional to 547,809.60, 821,714.40 and 359,803.20

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Solution

The fourth proportional to 547,809.60, 821,714.40 and 359,803.20 is: 539,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,809.60 : 821,714.40 = 359,803.20 : x
  2. Step 2: Convert to fraction form
    547,809.60/821,714.40 = 359,803.20/x
  3. Step 3: Cross multiply
    547,809.60x = 821,714.40 × 359,803.20
  4. Step 4: Simplify right side
    547,809.60x = 295,655,470,606.08
  5. Step 5: Solve for x
    x = 295,655,470,606.08/547,809.60
  6. Step 6: Final answer
    x = 539,704.80

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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.