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Finding the Fourth Proportional to 657,751.28, 907,696.72 and 355,945.28

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Solution

The fourth proportional to 657,751.28, 907,696.72 and 355,945.28 is: 491,204.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,751.28 : 907,696.72 = 355,945.28 : x
  2. Step 2: Convert to fraction form
    657,751.28/907,696.72 = 355,945.28/x
  3. Step 3: Cross multiply
    657,751.28x = 907,696.72 × 355,945.28
  4. Step 4: Simplify right side
    657,751.28x = 323,090,363,155.48
  5. Step 5: Solve for x
    x = 323,090,363,155.48/657,751.28
  6. Step 6: Final answer
    x = 491,204.46

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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.