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Finding the Fourth Proportional to 648,002.05, 972,003.08 and 363,400.45

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Solution

The fourth proportional to 648,002.05, 972,003.08 and 363,400.45 is: 545,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.05 : 972,003.08 = 363,400.45 : x
  2. Step 2: Convert to fraction form
    648,002.05/972,003.08 = 363,400.45/x
  3. Step 3: Cross multiply
    648,002.05x = 972,003.08 × 363,400.45
  4. Step 4: Simplify right side
    648,002.05x = 353,226,356,673.39
  5. Step 5: Solve for x
    x = 353,226,356,673.39/648,002.05
  6. Step 6: Final answer
    x = 545,100.68

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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.