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Finding the Fourth Proportional to 12,723,779.40, 17,775,499.80 and 12,723,779.40

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Solution

The fourth proportional to 12,723,779.40, 17,775,499.80 and 12,723,779.40 is: 17,775,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723,779.40 : 17,775,499.80 = 12,723,779.40 : x
  2. Step 2: Convert to fraction form
    12,723,779.40/17,775,499.80 = 12,723,779.40/x
  3. Step 3: Cross multiply
    12,723,779.40x = 17,775,499.80 × 12,723,779.40
  4. Step 4: Simplify right side
    12,723,779.40x = 226,171,538,179,944.12
  5. Step 5: Solve for x
    x = 226,171,538,179,944.12/12,723,779.40
  6. Step 6: Final answer
    x = 17,775,499.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.