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Finding the Fourth Proportional to 657,602.28, 907,491.12 and 355,796.28

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Solution

The fourth proportional to 657,602.28, 907,491.12 and 355,796.28 is: 490,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,602.28 : 907,491.12 = 355,796.28 : x
  2. Step 2: Convert to fraction form
    657,602.28/907,491.12 = 355,796.28/x
  3. Step 3: Cross multiply
    657,602.28x = 907,491.12 × 355,796.28
  4. Step 4: Simplify right side
    657,602.28x = 322,881,964,629.03
  5. Step 5: Solve for x
    x = 322,881,964,629.03/657,602.28
  6. Step 6: Final answer
    x = 490,998.85

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1.5x scale

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.