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Finding the Fourth Proportional to 566,120.45, 781,252.43 and 307,998.87

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Solution

The fourth proportional to 566,120.45, 781,252.43 and 307,998.87 is: 425,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,120.45 : 781,252.43 = 307,998.87 : x
  2. Step 2: Convert to fraction form
    566,120.45/781,252.43 = 307,998.87/x
  3. Step 3: Cross multiply
    566,120.45x = 781,252.43 × 307,998.87
  4. Step 4: Simplify right side
    566,120.45x = 240,624,864,084.76
  5. Step 5: Solve for x
    x = 240,624,864,084.76/566,120.45
  6. Step 6: Final answer
    x = 425,041.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.