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Finding the Fourth Proportional to 579,616.36, 869,674.83 and 313,564.30

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Solution

The fourth proportional to 579,616.36, 869,674.83 and 313,564.30 is: 470,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,616.36 : 869,674.83 = 313,564.30 : x
  2. Step 2: Convert to fraction form
    579,616.36/869,674.83 = 313,564.30/x
  3. Step 3: Cross multiply
    579,616.36x = 869,674.83 × 313,564.30
  4. Step 4: Simplify right side
    579,616.36x = 272,698,979,296.57
  5. Step 5: Solve for x
    x = 272,698,979,296.57/579,616.36
  6. Step 6: Final answer
    x = 470,481.85

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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.