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Finding the Fourth Proportional to 661,757.64, 913,387.80 and 375,445.32

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Solution

The fourth proportional to 661,757.64, 913,387.80 and 375,445.32 is: 518,206.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,757.64 : 913,387.80 = 375,445.32 : x
  2. Step 2: Convert to fraction form
    661,757.64/913,387.80 = 375,445.32/x
  3. Step 3: Cross multiply
    661,757.64x = 913,387.80 × 375,445.32
  4. Step 4: Simplify right side
    661,757.64x = 342,927,174,855.10
  5. Step 5: Solve for x
    x = 342,927,174,855.10/661,757.64
  6. Step 6: Final answer
    x = 518,206.60

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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.