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Finding the Fourth Proportional to 611,210.50, 917,775.37 and 517,667.05

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Solution

The fourth proportional to 611,210.50, 917,775.37 and 517,667.05 is: 777,313.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,210.50 : 917,775.37 = 517,667.05 : x
  2. Step 2: Convert to fraction form
    611,210.50/917,775.37 = 517,667.05/x
  3. Step 3: Cross multiply
    611,210.50x = 917,775.37 × 517,667.05
  4. Step 4: Simplify right side
    611,210.50x = 475,102,068,350.56
  5. Step 5: Solve for x
    x = 475,102,068,350.56/611,210.50
  6. Step 6: Final answer
    x = 777,313.33

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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.