Home / 919,921.32-1,380,103.47-387,594.63

Finding the Fourth Proportional to 919,921.32, 1,380,103.47 and 387,594.63

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Solution

The fourth proportional to 919,921.32, 1,380,103.47 and 387,594.63 is: 581,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,921.32 : 1,380,103.47 = 387,594.63 : x
  2. Step 2: Convert to fraction form
    919,921.32/1,380,103.47 = 387,594.63/x
  3. Step 3: Cross multiply
    919,921.32x = 1,380,103.47 × 387,594.63
  4. Step 4: Simplify right side
    919,921.32x = 534,920,693,816.37
  5. Step 5: Solve for x
    x = 534,920,693,816.37/919,921.32
  6. Step 6: Final answer
    x = 581,485.27

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1.5x scale

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.