Home / 1,419,622.40-2,129,433.60-1,316,979.20

Finding the Fourth Proportional to 1,419,622.40, 2,129,433.60 and 1,316,979.20

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Solution

The fourth proportional to 1,419,622.40, 2,129,433.60 and 1,316,979.20 is: 1,975,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,622.40 : 2,129,433.60 = 1,316,979.20 : x
  2. Step 2: Convert to fraction form
    1,419,622.40/2,129,433.60 = 1,316,979.20/x
  3. Step 3: Cross multiply
    1,419,622.40x = 2,129,433.60 × 1,316,979.20
  4. Step 4: Simplify right side
    1,419,622.40x = 2,804,419,758,981.12
  5. Step 5: Solve for x
    x = 2,804,419,758,981.12/1,419,622.40
  6. Step 6: Final answer
    x = 1,975,468.80

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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.