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Finding the Fourth Proportional to 657,023.28, 906,692.04 and 355,217.28

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Solution

The fourth proportional to 657,023.28, 906,692.04 and 355,217.28 is: 490,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,023.28 : 906,692.04 = 355,217.28 : x
  2. Step 2: Convert to fraction form
    657,023.28/906,692.04 = 355,217.28/x
  3. Step 3: Cross multiply
    657,023.28x = 906,692.04 × 355,217.28
  4. Step 4: Simplify right side
    657,023.28x = 322,072,680,246.45
  5. Step 5: Solve for x
    x = 322,072,680,246.45/657,023.28
  6. Step 6: Final answer
    x = 490,199.80

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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.