Home / 1,290,178.60-1,936,142.70-839,802.40

Finding the Fourth Proportional to 1,290,178.60, 1,936,142.70 and 839,802.40

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Solution

The fourth proportional to 1,290,178.60, 1,936,142.70 and 839,802.40 is: 1,260,273.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,178.60 : 1,936,142.70 = 839,802.40 : x
  2. Step 2: Convert to fraction form
    1,290,178.60/1,936,142.70 = 839,802.40/x
  3. Step 3: Cross multiply
    1,290,178.60x = 1,936,142.70 × 839,802.40
  4. Step 4: Simplify right side
    1,290,178.60x = 1,625,977,286,202.48
  5. Step 5: Solve for x
    x = 1,625,977,286,202.48/1,290,178.60
  6. Step 6: Final answer
    x = 1,260,273.02

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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.