Home / 430,749.48-645,724.86-190,735.55

Finding the Fourth Proportional to 430,749.48, 645,724.86 and 190,735.55

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Solution

The fourth proportional to 430,749.48, 645,724.86 and 190,735.55 is: 285,926.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,749.48 : 645,724.86 = 190,735.55 : x
  2. Step 2: Convert to fraction form
    430,749.48/645,724.86 = 190,735.55/x
  3. Step 3: Cross multiply
    430,749.48x = 645,724.86 × 190,735.55
  4. Step 4: Simplify right side
    430,749.48x = 123,162,686,320.77
  5. Step 5: Solve for x
    x = 123,162,686,320.77/430,749.48
  6. Step 6: Final answer
    x = 285,926.49

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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.