Home / 780,765.32-1,077,025.74-539,174.72

Finding the Fourth Proportional to 780,765.32, 1,077,025.74 and 539,174.72

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Solution

The fourth proportional to 780,765.32, 1,077,025.74 and 539,174.72 is: 743,763.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,765.32 : 1,077,025.74 = 539,174.72 : x
  2. Step 2: Convert to fraction form
    780,765.32/1,077,025.74 = 539,174.72/x
  3. Step 3: Cross multiply
    780,765.32x = 1,077,025.74 × 539,174.72
  4. Step 4: Simplify right side
    780,765.32x = 580,705,051,797.29
  5. Step 5: Solve for x
    x = 580,705,051,797.29/780,765.32
  6. Step 6: Final answer
    x = 743,763.89

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1.5x scale

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.