Home / 1,380,289.86-2,069,734.32-631,694.34

Finding the Fourth Proportional to 1,380,289.86, 2,069,734.32 and 631,694.34

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Solution

The fourth proportional to 1,380,289.86, 2,069,734.32 and 631,694.34 is: 947,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,289.86 : 2,069,734.32 = 631,694.34 : x
  2. Step 2: Convert to fraction form
    1,380,289.86/2,069,734.32 = 631,694.34/x
  3. Step 3: Cross multiply
    1,380,289.86x = 2,069,734.32 × 631,694.34
  4. Step 4: Simplify right side
    1,380,289.86x = 1,307,439,455,247.75
  5. Step 5: Solve for x
    x = 1,307,439,455,247.75/1,380,289.86
  6. Step 6: Final answer
    x = 947,220.94

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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.