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Finding the Fourth Proportional to 668,813.76, 922,989.60 and 367,018.56

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Solution

The fourth proportional to 668,813.76, 922,989.60 and 367,018.56 is: 506,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,813.76 : 922,989.60 = 367,018.56 : x
  2. Step 2: Convert to fraction form
    668,813.76/922,989.60 = 367,018.56/x
  3. Step 3: Cross multiply
    668,813.76x = 922,989.60 × 367,018.56
  4. Step 4: Simplify right side
    668,813.76x = 338,754,313,886.98
  5. Step 5: Solve for x
    x = 338,754,313,886.98/668,813.76
  6. Step 6: Final answer
    x = 506,500.22

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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.