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Finding the Fourth Proportional to 648,002.70, 972,004.05 and 349,404.30

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Solution

The fourth proportional to 648,002.70, 972,004.05 and 349,404.30 is: 524,106.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.70 : 972,004.05 = 349,404.30 : x
  2. Step 2: Convert to fraction form
    648,002.70/972,004.05 = 349,404.30/x
  3. Step 3: Cross multiply
    648,002.70x = 972,004.05 × 349,404.30
  4. Step 4: Simplify right side
    648,002.70x = 339,622,394,687.42
  5. Step 5: Solve for x
    x = 339,622,394,687.42/648,002.70
  6. Step 6: Final answer
    x = 524,106.45

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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.