Home / 2,158,443.80-2,978,656.78-1,191,575.40

Finding the Fourth Proportional to 2,158,443.80, 2,978,656.78 and 1,191,575.40

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Solution

The fourth proportional to 2,158,443.80, 2,978,656.78 and 1,191,575.40 is: 1,644,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,443.80 : 2,978,656.78 = 1,191,575.40 : x
  2. Step 2: Convert to fraction form
    2,158,443.80/2,978,656.78 = 1,191,575.40/x
  3. Step 3: Cross multiply
    2,158,443.80x = 2,978,656.78 × 1,191,575.40
  4. Step 4: Simplify right side
    2,158,443.80x = 3,549,294,144,091.21
  5. Step 5: Solve for x
    x = 3,549,294,144,091.21/2,158,443.80
  6. Step 6: Final answer
    x = 1,644,376.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.