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Finding the Fourth Proportional to 6,645,652.45, 9,968,478.68 and 3,286,420.45

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Solution

The fourth proportional to 6,645,652.45, 9,968,478.68 and 3,286,420.45 is: 4,929,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645,652.45 : 9,968,478.68 = 3,286,420.45 : x
  2. Step 2: Convert to fraction form
    6,645,652.45/9,968,478.68 = 3,286,420.45/x
  3. Step 3: Cross multiply
    6,645,652.45x = 9,968,478.68 × 3,286,420.45
  4. Step 4: Simplify right side
    6,645,652.45x = 32,760,612,189,341.01
  5. Step 5: Solve for x
    x = 32,760,612,189,341.01/6,645,652.45
  6. Step 6: Final answer
    x = 4,929,630.68

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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.