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Finding the Fourth Proportional to 12,295,985.40, 18,443,978.10 and 3,775,214.70

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Solution

The fourth proportional to 12,295,985.40, 18,443,978.10 and 3,775,214.70 is: 5,662,822.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,295,985.40 : 18,443,978.10 = 3,775,214.70 : x
  2. Step 2: Convert to fraction form
    12,295,985.40/18,443,978.10 = 3,775,214.70/x
  3. Step 3: Cross multiply
    12,295,985.40x = 18,443,978.10 × 3,775,214.70
  4. Step 4: Simplify right side
    12,295,985.40x = 69,629,977,249,598.08
  5. Step 5: Solve for x
    x = 69,629,977,249,598.08/12,295,985.40
  6. Step 6: Final answer
    x = 5,662,822.05

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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.