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Finding the Fourth Proportional to 613,919.40, 922,847.40 and 437,647.20

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Solution

The fourth proportional to 613,919.40, 922,847.40 and 437,647.20 is: 657,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,919.40 : 922,847.40 = 437,647.20 : x
  2. Step 2: Convert to fraction form
    613,919.40/922,847.40 = 437,647.20/x
  3. Step 3: Cross multiply
    613,919.40x = 922,847.40 × 437,647.20
  4. Step 4: Simplify right side
    613,919.40x = 403,881,580,637.28
  5. Step 5: Solve for x
    x = 403,881,580,637.28/613,919.40
  6. Step 6: Final answer
    x = 657,873.95

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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.