Home / 780,038.40-1,170,057.60-360,134.40

Finding the Fourth Proportional to 780,038.40, 1,170,057.60 and 360,134.40

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Solution

The fourth proportional to 780,038.40, 1,170,057.60 and 360,134.40 is: 540,201.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,038.40 : 1,170,057.60 = 360,134.40 : x
  2. Step 2: Convert to fraction form
    780,038.40/1,170,057.60 = 360,134.40/x
  3. Step 3: Cross multiply
    780,038.40x = 1,170,057.60 × 360,134.40
  4. Step 4: Simplify right side
    780,038.40x = 421,377,991,741.44
  5. Step 5: Solve for x
    x = 421,377,991,741.44/780,038.40
  6. Step 6: Final answer
    x = 540,201.60

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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.