Home / 919,782.32-1,379,840.34-380,039.64

Finding the Fourth Proportional to 919,782.32, 1,379,840.34 and 380,039.64

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Solution

The fourth proportional to 919,782.32, 1,379,840.34 and 380,039.64 is: 570,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,782.32 : 1,379,840.34 = 380,039.64 : x
  2. Step 2: Convert to fraction form
    919,782.32/1,379,840.34 = 380,039.64/x
  3. Step 3: Cross multiply
    919,782.32x = 1,379,840.34 × 380,039.64
  4. Step 4: Simplify right side
    919,782.32x = 524,394,026,071.08
  5. Step 5: Solve for x
    x = 524,394,026,071.08/919,782.32
  6. Step 6: Final answer
    x = 570,128.40

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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.