Home / 1,392,656-1,921,943.04-789,238.40

Finding the Fourth Proportional to 1,392,656, 1,921,943.04 and 789,238.40

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Solution

The fourth proportional to 1,392,656, 1,921,943.04 and 789,238.40 is: 1,089,193.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,656 : 1,921,943.04 = 789,238.40 : x
  2. Step 2: Convert to fraction form
    1,392,656/1,921,943.04 = 789,238.40/x
  3. Step 3: Cross multiply
    1,392,656x = 1,921,943.04 × 789,238.40
  4. Step 4: Simplify right side
    1,392,656x = 1,516,871,249,780.74
  5. Step 5: Solve for x
    x = 1,516,871,249,780.74/1,392,656
  6. Step 6: Final answer
    x = 1,089,193.06

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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.