Home / 664,865.28-917,548.48-406,661.28

Finding the Fourth Proportional to 664,865.28, 917,548.48 and 406,661.28

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Solution

The fourth proportional to 664,865.28, 917,548.48 and 406,661.28 is: 561,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,865.28 : 917,548.48 = 406,661.28 : x
  2. Step 2: Convert to fraction form
    664,865.28/917,548.48 = 406,661.28/x
  3. Step 3: Cross multiply
    664,865.28x = 917,548.48 × 406,661.28
  4. Step 4: Simplify right side
    664,865.28x = 373,131,439,338.85
  5. Step 5: Solve for x
    x = 373,131,439,338.85/664,865.28
  6. Step 6: Final answer
    x = 561,213.60

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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.