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Finding the Fourth Proportional to 657,610.45, 907,502.40 and 355,804.45

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Solution

The fourth proportional to 657,610.45, 907,502.40 and 355,804.45 is: 491,010.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,610.45 : 907,502.40 = 355,804.45 : x
  2. Step 2: Convert to fraction form
    657,610.45/907,502.40 = 355,804.45/x
  3. Step 3: Cross multiply
    657,610.45x = 907,502.40 × 355,804.45
  4. Step 4: Simplify right side
    657,610.45x = 322,893,387,768.17
  5. Step 5: Solve for x
    x = 322,893,387,768.17/657,610.45
  6. Step 6: Final answer
    x = 491,010.13

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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.