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Finding the Fourth Proportional to 657,103.55, 985,655.33 and 657,103.55

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Solution

The fourth proportional to 657,103.55, 985,655.33 and 657,103.55 is: 985,655.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,103.55 : 985,655.33 = 657,103.55 : x
  2. Step 2: Convert to fraction form
    657,103.55/985,655.33 = 657,103.55/x
  3. Step 3: Cross multiply
    657,103.55x = 985,655.33 × 657,103.55
  4. Step 4: Simplify right side
    657,103.55x = 647,677,613,133.90
  5. Step 5: Solve for x
    x = 647,677,613,133.90/657,103.55
  6. Step 6: Final answer
    x = 985,655.33

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.