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Finding the Fourth Proportional to 768,128.70, 1,150,119.45 and 602,240.70

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Solution

The fourth proportional to 768,128.70, 1,150,119.45 and 602,240.70 is: 901,735.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,128.70 : 1,150,119.45 = 602,240.70 : x
  2. Step 2: Convert to fraction form
    768,128.70/1,150,119.45 = 602,240.70/x
  3. Step 3: Cross multiply
    768,128.70x = 1,150,119.45 × 602,240.70
  4. Step 4: Simplify right side
    768,128.70x = 692,648,742,651.62
  5. Step 5: Solve for x
    x = 692,648,742,651.62/768,128.70
  6. Step 6: Final answer
    x = 901,735.27

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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.