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Finding the Fourth Proportional to 354,410.39, 529,356.46 and 320,624.57

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Solution

The fourth proportional to 354,410.39, 529,356.46 and 320,624.57 is: 478,893.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,410.39 : 529,356.46 = 320,624.57 : x
  2. Step 2: Convert to fraction form
    354,410.39/529,356.46 = 320,624.57/x
  3. Step 3: Cross multiply
    354,410.39x = 529,356.46 × 320,624.57
  4. Step 4: Simplify right side
    354,410.39x = 169,724,687,364.22
  5. Step 5: Solve for x
    x = 169,724,687,364.22/354,410.39
  6. Step 6: Final answer
    x = 478,893.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.