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Finding the Fourth Proportional to 657,794.36, 907,756.27 and 355,988.36

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Solution

The fourth proportional to 657,794.36, 907,756.27 and 355,988.36 is: 491,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,794.36 : 907,756.27 = 355,988.36 : x
  2. Step 2: Convert to fraction form
    657,794.36/907,756.27 = 355,988.36/x
  3. Step 3: Cross multiply
    657,794.36x = 907,756.27 × 355,988.36
  4. Step 4: Simplify right side
    657,794.36x = 323,150,660,833.78
  5. Step 5: Solve for x
    x = 323,150,660,833.78/657,794.36
  6. Step 6: Final answer
    x = 491,263.96

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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.