Home / 671,317.70-1,006,976.55-645,512.90

Finding the Fourth Proportional to 671,317.70, 1,006,976.55 and 645,512.90

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Solution

The fourth proportional to 671,317.70, 1,006,976.55 and 645,512.90 is: 968,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,317.70 : 1,006,976.55 = 645,512.90 : x
  2. Step 2: Convert to fraction form
    671,317.70/1,006,976.55 = 645,512.90/x
  3. Step 3: Cross multiply
    671,317.70x = 1,006,976.55 × 645,512.90
  4. Step 4: Simplify right side
    671,317.70x = 650,016,353,022.50
  5. Step 5: Solve for x
    x = 650,016,353,022.50/671,317.70
  6. Step 6: Final answer
    x = 968,269.35

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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.