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Finding the Fourth Proportional to 657,909.09, 907,936.52 and 403,211.07

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Solution

The fourth proportional to 657,909.09, 907,936.52 and 403,211.07 is: 556,444.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,909.09 : 907,936.52 = 403,211.07 : x
  2. Step 2: Convert to fraction form
    657,909.09/907,936.52 = 403,211.07/x
  3. Step 3: Cross multiply
    657,909.09x = 907,936.52 × 403,211.07
  4. Step 4: Simplify right side
    657,909.09x = 366,090,053,705.22
  5. Step 5: Solve for x
    x = 366,090,053,705.22/657,909.09
  6. Step 6: Final answer
    x = 556,444.74

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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.