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Finding the Fourth Proportional to 417,345.87, 626,903.97 and 393,050.73

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Solution

The fourth proportional to 417,345.87, 626,903.97 and 393,050.73 is: 590,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,345.87 : 626,903.97 = 393,050.73 : x
  2. Step 2: Convert to fraction form
    417,345.87/626,903.97 = 393,050.73/x
  3. Step 3: Cross multiply
    417,345.87x = 626,903.97 × 393,050.73
  4. Step 4: Simplify right side
    417,345.87x = 246,405,063,048.40
  5. Step 5: Solve for x
    x = 246,405,063,048.40/417,345.87
  6. Step 6: Final answer
    x = 590,409.73

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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.