Home / 644,181.60-966,272.40-638,276.70

Finding the Fourth Proportional to 644,181.60, 966,272.40 and 638,276.70

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Solution

The fourth proportional to 644,181.60, 966,272.40 and 638,276.70 is: 957,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,181.60 : 966,272.40 = 638,276.70 : x
  2. Step 2: Convert to fraction form
    644,181.60/966,272.40 = 638,276.70/x
  3. Step 3: Cross multiply
    644,181.60x = 966,272.40 × 638,276.70
  4. Step 4: Simplify right side
    644,181.60x = 616,749,158,773.08
  5. Step 5: Solve for x
    x = 616,749,158,773.08/644,181.60
  6. Step 6: Final answer
    x = 957,415.05

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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.