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Finding the Fourth Proportional to 660,751.25, 911,836.73 and 358,945.25

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Solution

The fourth proportional to 660,751.25, 911,836.73 and 358,945.25 is: 495,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,751.25 : 911,836.73 = 358,945.25 : x
  2. Step 2: Convert to fraction form
    660,751.25/911,836.73 = 358,945.25/x
  3. Step 3: Cross multiply
    660,751.25x = 911,836.73 × 358,945.25
  4. Step 4: Simplify right side
    660,751.25x = 327,299,461,214.31
  5. Step 5: Solve for x
    x = 327,299,461,214.31/660,751.25
  6. Step 6: Final answer
    x = 495,344.45

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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.