Home / 430,776.18-646,164.45-193,842.09

Finding the Fourth Proportional to 430,776.18, 646,164.45 and 193,842.09

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Solution

The fourth proportional to 430,776.18, 646,164.45 and 193,842.09 is: 290,763.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,776.18 : 646,164.45 = 193,842.09 : x
  2. Step 2: Convert to fraction form
    430,776.18/646,164.45 = 193,842.09/x
  3. Step 3: Cross multiply
    430,776.18x = 646,164.45 × 193,842.09
  4. Step 4: Simplify right side
    430,776.18x = 125,253,867,471.70
  5. Step 5: Solve for x
    x = 125,253,867,471.70/430,776.18
  6. Step 6: Final answer
    x = 290,763.22

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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.