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Finding the Fourth Proportional to 657,037.44, 906,710.40 and 355,230.72

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Solution

The fourth proportional to 657,037.44, 906,710.40 and 355,230.72 is: 490,217.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,037.44 : 906,710.40 = 355,230.72 : x
  2. Step 2: Convert to fraction form
    657,037.44/906,710.40 = 355,230.72/x
  3. Step 3: Cross multiply
    657,037.44x = 906,710.40 × 355,230.72
  4. Step 4: Simplify right side
    657,037.44x = 322,091,388,223.49
  5. Step 5: Solve for x
    x = 322,091,388,223.49/657,037.44
  6. Step 6: Final answer
    x = 490,217.71

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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.