Home / 430,656.92-645,985.58-193,722.79

Finding the Fourth Proportional to 430,656.92, 645,985.58 and 193,722.79

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Solution

The fourth proportional to 430,656.92, 645,985.58 and 193,722.79 is: 290,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,656.92 : 645,985.58 = 193,722.79 : x
  2. Step 2: Convert to fraction form
    430,656.92/645,985.58 = 193,722.79/x
  3. Step 3: Cross multiply
    430,656.92x = 645,985.58 × 193,722.79
  4. Step 4: Simplify right side
    430,656.92x = 125,142,128,857.37
  5. Step 5: Solve for x
    x = 125,142,128,857.37/430,656.92
  6. Step 6: Final answer
    x = 290,584.27

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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.