Home / 393,345,373.20-590,689,906.20-257,632,400.40

Finding the Fourth Proportional to 393,345,373.20, 590,689,906.20 and 257,632,400.40

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Solution

The fourth proportional to 393,345,373.20, 590,689,906.20 and 257,632,400.40 is: 386,888,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,345,373.20 : 590,689,906.20 = 257,632,400.40 : x
  2. Step 2: Convert to fraction form
    393,345,373.20/590,689,906.20 = 257,632,400.40/x
  3. Step 3: Cross multiply
    393,345,373.20x = 590,689,906.20 × 257,632,400.40
  4. Step 4: Simplify right side
    393,345,373.20x = 152,180,858,426,356,864
  5. Step 5: Solve for x
    x = 152,180,858,426,356,864/393,345,373.20
  6. Step 6: Final answer
    x = 386,888,644.93

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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.