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Finding the Fourth Proportional to 661,751.64, 913,379.49 and 375,439.32

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Solution

The fourth proportional to 661,751.64, 913,379.49 and 375,439.32 is: 518,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,751.64 : 913,379.49 = 375,439.32 : x
  2. Step 2: Convert to fraction form
    661,751.64/913,379.49 = 375,439.32/x
  3. Step 3: Cross multiply
    661,751.64x = 913,379.49 × 375,439.32
  4. Step 4: Simplify right side
    661,751.64x = 342,918,574,627.55
  5. Step 5: Solve for x
    x = 342,918,574,627.55/661,751.64
  6. Step 6: Final answer
    x = 518,198.30

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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.