Home / 1,390,639.60-2,085,114.60-548,220.40

Finding the Fourth Proportional to 1,390,639.60, 2,085,114.60 and 548,220.40

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Solution

The fourth proportional to 1,390,639.60, 2,085,114.60 and 548,220.40 is: 821,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,639.60 : 2,085,114.60 = 548,220.40 : x
  2. Step 2: Convert to fraction form
    1,390,639.60/2,085,114.60 = 548,220.40/x
  3. Step 3: Cross multiply
    1,390,639.60x = 2,085,114.60 × 548,220.40
  4. Step 4: Simplify right side
    1,390,639.60x = 1,143,102,360,057.84
  5. Step 5: Solve for x
    x = 1,143,102,360,057.84/1,390,639.60
  6. Step 6: Final answer
    x = 821,997.56

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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.