Home / 1,392,681-1,921,977.54-789,263.40

Finding the Fourth Proportional to 1,392,681, 1,921,977.54 and 789,263.40

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Solution

The fourth proportional to 1,392,681, 1,921,977.54 and 789,263.40 is: 1,089,227.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,681 : 1,921,977.54 = 789,263.40 : x
  2. Step 2: Convert to fraction form
    1,392,681/1,921,977.54 = 789,263.40/x
  3. Step 3: Cross multiply
    1,392,681x = 1,921,977.54 × 789,263.40
  4. Step 4: Simplify right side
    1,392,681x = 1,516,946,527,944.04
  5. Step 5: Solve for x
    x = 1,516,946,527,944.04/1,392,681
  6. Step 6: Final answer
    x = 1,089,227.56

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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.