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Finding the Fourth Proportional to 661,930.76, 913,435.55 and 367,562.23

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Solution

The fourth proportional to 661,930.76, 913,435.55 and 367,562.23 is: 507,219.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,930.76 : 913,435.55 = 367,562.23 : x
  2. Step 2: Convert to fraction form
    661,930.76/913,435.55 = 367,562.23/x
  3. Step 3: Cross multiply
    661,930.76x = 913,435.55 × 367,562.23
  4. Step 4: Simplify right side
    661,930.76x = 335,744,403,152.10
  5. Step 5: Solve for x
    x = 335,744,403,152.10/661,930.76
  6. Step 6: Final answer
    x = 507,219.82

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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.