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Finding the Fourth Proportional to 657,804.12, 907,672.56 and 385,769.22

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Solution

The fourth proportional to 657,804.12, 907,672.56 and 385,769.22 is: 532,304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,804.12 : 907,672.56 = 385,769.22 : x
  2. Step 2: Convert to fraction form
    657,804.12/907,672.56 = 385,769.22/x
  3. Step 3: Cross multiply
    657,804.12x = 907,672.56 × 385,769.22
  4. Step 4: Simplify right side
    657,804.12x = 350,152,135,486.60
  5. Step 5: Solve for x
    x = 350,152,135,486.60/657,804.12
  6. Step 6: Final answer
    x = 532,304.56

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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.