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Finding the Fourth Proportional to 958,957.60, 1,439,991.60 and 644,807.20

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Solution

The fourth proportional to 958,957.60, 1,439,991.60 and 644,807.20 is: 968,256.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,957.60 : 1,439,991.60 = 644,807.20 : x
  2. Step 2: Convert to fraction form
    958,957.60/1,439,991.60 = 644,807.20/x
  3. Step 3: Cross multiply
    958,957.60x = 1,439,991.60 × 644,807.20
  4. Step 4: Simplify right side
    958,957.60x = 928,516,951,619.52
  5. Step 5: Solve for x
    x = 928,516,951,619.52/958,957.60
  6. Step 6: Final answer
    x = 968,256.52

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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.