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Finding the Fourth Proportional to 664,289.40, 996,434.10 and 547,649.40

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Solution

The fourth proportional to 664,289.40, 996,434.10 and 547,649.40 is: 821,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,289.40 : 996,434.10 = 547,649.40 : x
  2. Step 2: Convert to fraction form
    664,289.40/996,434.10 = 547,649.40/x
  3. Step 3: Cross multiply
    664,289.40x = 996,434.10 × 547,649.40
  4. Step 4: Simplify right side
    664,289.40x = 545,696,537,004.54
  5. Step 5: Solve for x
    x = 545,696,537,004.54/664,289.40
  6. Step 6: Final answer
    x = 821,474.10

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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.