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Finding the Fourth Proportional to 407,767.60, 611,651.40 and 348,718.60

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Solution

The fourth proportional to 407,767.60, 611,651.40 and 348,718.60 is: 523,077.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,767.60 : 611,651.40 = 348,718.60 : x
  2. Step 2: Convert to fraction form
    407,767.60/611,651.40 = 348,718.60/x
  3. Step 3: Cross multiply
    407,767.60x = 611,651.40 × 348,718.60
  4. Step 4: Simplify right side
    407,767.60x = 213,294,219,896.04
  5. Step 5: Solve for x
    x = 213,294,219,896.04/407,767.60
  6. Step 6: Final answer
    x = 523,077.90

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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.