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Finding the Fourth Proportional to 553,553.60, 831,885.60 and 485,124.80

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Solution

The fourth proportional to 553,553.60, 831,885.60 and 485,124.80 is: 729,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,553.60 : 831,885.60 = 485,124.80 : x
  2. Step 2: Convert to fraction form
    553,553.60/831,885.60 = 485,124.80/x
  3. Step 3: Cross multiply
    553,553.60x = 831,885.60 × 485,124.80
  4. Step 4: Simplify right side
    553,553.60x = 403,568,335,322.88
  5. Step 5: Solve for x
    x = 403,568,335,322.88/553,553.60
  6. Step 6: Final answer
    x = 729,050.15

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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.