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Finding the Fourth Proportional to 613,894.40, 922,809.90 and 437,622.20

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Solution

The fourth proportional to 613,894.40, 922,809.90 and 437,622.20 is: 657,836.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,894.40 : 922,809.90 = 437,622.20 : x
  2. Step 2: Convert to fraction form
    613,894.40/922,809.90 = 437,622.20/x
  3. Step 3: Cross multiply
    613,894.40x = 922,809.90 × 437,622.20
  4. Step 4: Simplify right side
    613,894.40x = 403,842,098,619.78
  5. Step 5: Solve for x
    x = 403,842,098,619.78/613,894.40
  6. Step 6: Final answer
    x = 657,836.43

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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.