Home / 780,500.75-1,170,218.39-415,816.88

Finding the Fourth Proportional to 780,500.75, 1,170,218.39 and 415,816.88

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Solution

The fourth proportional to 780,500.75, 1,170,218.39 and 415,816.88 is: 623,441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,500.75 : 1,170,218.39 = 415,816.88 : x
  2. Step 2: Convert to fraction form
    780,500.75/1,170,218.39 = 415,816.88/x
  3. Step 3: Cross multiply
    780,500.75x = 1,170,218.39 × 415,816.88
  4. Step 4: Simplify right side
    780,500.75x = 486,596,551,918.25
  5. Step 5: Solve for x
    x = 486,596,551,918.25/780,500.75
  6. Step 6: Final answer
    x = 623,441.50

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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.