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Finding the Fourth Proportional to 579,399.60, 869,099.40 and 558,404.40

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Solution

The fourth proportional to 579,399.60, 869,099.40 and 558,404.40 is: 837,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,399.60 : 869,099.40 = 558,404.40 : x
  2. Step 2: Convert to fraction form
    579,399.60/869,099.40 = 558,404.40/x
  3. Step 3: Cross multiply
    579,399.60x = 869,099.40 × 558,404.40
  4. Step 4: Simplify right side
    579,399.60x = 485,308,928,997.36
  5. Step 5: Solve for x
    x = 485,308,928,997.36/579,399.60
  6. Step 6: Final answer
    x = 837,606.60

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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.