Home / 677,653.51-1,016,155.87-393,422.59

Finding the Fourth Proportional to 677,653.51, 1,016,155.87 and 393,422.59

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Solution

The fourth proportional to 677,653.51, 1,016,155.87 and 393,422.59 is: 589,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,653.51 : 1,016,155.87 = 393,422.59 : x
  2. Step 2: Convert to fraction form
    677,653.51/1,016,155.87 = 393,422.59/x
  3. Step 3: Cross multiply
    677,653.51x = 1,016,155.87 × 393,422.59
  4. Step 4: Simplify right side
    677,653.51x = 399,778,674,219.10
  5. Step 5: Solve for x
    x = 399,778,674,219.10/677,653.51
  6. Step 6: Final answer
    x = 589,945.55

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Double scale
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Similar ratio
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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.