Home / 839,808,890.20-1,259,713,335.30-257,632,989.40

Finding the Fourth Proportional to 839,808,890.20, 1,259,713,335.30 and 257,632,989.40

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Solution

The fourth proportional to 839,808,890.20, 1,259,713,335.30 and 257,632,989.40 is: 386,449,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,890.20 : 1,259,713,335.30 = 257,632,989.40 : x
  2. Step 2: Convert to fraction form
    839,808,890.20/1,259,713,335.30 = 257,632,989.40/x
  3. Step 3: Cross multiply
    839,808,890.20x = 1,259,713,335.30 × 257,632,989.40
  4. Step 4: Simplify right side
    839,808,890.20x = 324,543,712,360,383,552
  5. Step 5: Solve for x
    x = 324,543,712,360,383,552/839,808,890.20
  6. Step 6: Final answer
    x = 386,449,484.10

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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.