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Finding the Fourth Proportional to 547,758.60, 821,637.90 and 455,598.60

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Solution

The fourth proportional to 547,758.60, 821,637.90 and 455,598.60 is: 683,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,758.60 : 821,637.90 = 455,598.60 : x
  2. Step 2: Convert to fraction form
    547,758.60/821,637.90 = 455,598.60/x
  3. Step 3: Cross multiply
    547,758.60x = 821,637.90 × 455,598.60
  4. Step 4: Simplify right side
    547,758.60x = 374,337,076,946.94
  5. Step 5: Solve for x
    x = 374,337,076,946.94/547,758.60
  6. Step 6: Final answer
    x = 683,397.90

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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.