Home / 1,431,979.60-2,147,969.40-1,237,117.90

Finding the Fourth Proportional to 1,431,979.60, 2,147,969.40 and 1,237,117.90

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Solution

The fourth proportional to 1,431,979.60, 2,147,969.40 and 1,237,117.90 is: 1,855,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,979.60 : 2,147,969.40 = 1,237,117.90 : x
  2. Step 2: Convert to fraction form
    1,431,979.60/2,147,969.40 = 1,237,117.90/x
  3. Step 3: Cross multiply
    1,431,979.60x = 2,147,969.40 × 1,237,117.90
  4. Step 4: Simplify right side
    1,431,979.60x = 2,657,291,393,392.26
  5. Step 5: Solve for x
    x = 2,657,291,393,392.26/1,431,979.60
  6. Step 6: Final answer
    x = 1,855,676.85

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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.