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Finding the Fourth Proportional to 664,673.60, 997,010.40 and 664,673.60

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Solution

The fourth proportional to 664,673.60, 997,010.40 and 664,673.60 is: 997,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,673.60 : 997,010.40 = 664,673.60 : x
  2. Step 2: Convert to fraction form
    664,673.60/997,010.40 = 664,673.60/x
  3. Step 3: Cross multiply
    664,673.60x = 997,010.40 × 664,673.60
  4. Step 4: Simplify right side
    664,673.60x = 662,686,491,805.44
  5. Step 5: Solve for x
    x = 662,686,491,805.44/664,673.60
  6. Step 6: Final answer
    x = 997,010.40

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Half scale
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Double scale
Find fourth proportional to 664,674.60, 997,011.90 and 664,674.60
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.