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Finding the Fourth Proportional to 657,852.75, 907,858.80 and 403,154.73

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Solution

The fourth proportional to 657,852.75, 907,858.80 and 403,154.73 is: 556,367.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,852.75 : 907,858.80 = 403,154.73 : x
  2. Step 2: Convert to fraction form
    657,852.75/907,858.80 = 403,154.73/x
  3. Step 3: Cross multiply
    657,852.75x = 907,858.80 × 403,154.73
  4. Step 4: Simplify right side
    657,852.75x = 366,007,569,392.12
  5. Step 5: Solve for x
    x = 366,007,569,392.12/657,852.75
  6. Step 6: Final answer
    x = 556,367.01

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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.