Home / 664,769.16-917,382.51-378,291.60

Finding the Fourth Proportional to 664,769.16, 917,382.51 and 378,291.60

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Solution

The fourth proportional to 664,769.16, 917,382.51 and 378,291.60 is: 522,043.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,769.16 : 917,382.51 = 378,291.60 : x
  2. Step 2: Convert to fraction form
    664,769.16/917,382.51 = 378,291.60/x
  3. Step 3: Cross multiply
    664,769.16x = 917,382.51 × 378,291.60
  4. Step 4: Simplify right side
    664,769.16x = 347,038,097,519.92
  5. Step 5: Solve for x
    x = 347,038,097,519.92/664,769.16
  6. Step 6: Final answer
    x = 522,043.02

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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.