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Finding the Fourth Proportional to 657,751.76, 907,697.40 and 355,945.76

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Solution

The fourth proportional to 657,751.76, 907,697.40 and 355,945.76 is: 491,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,751.76 : 907,697.40 = 355,945.76 : x
  2. Step 2: Convert to fraction form
    657,751.76/907,697.40 = 355,945.76/x
  3. Step 3: Cross multiply
    657,751.76x = 907,697.40 × 355,945.76
  4. Step 4: Simplify right side
    657,751.76x = 323,091,040,893.02
  5. Step 5: Solve for x
    x = 323,091,040,893.02/657,751.76
  6. Step 6: Final answer
    x = 491,205.13

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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.