Home / 839,842,687.20-1,259,764,030.80-257,666,786.40

Finding the Fourth Proportional to 839,842,687.20, 1,259,764,030.80 and 257,666,786.40

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Solution

The fourth proportional to 839,842,687.20, 1,259,764,030.80 and 257,666,786.40 is: 386,500,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,842,687.20 : 1,259,764,030.80 = 257,666,786.40 : x
  2. Step 2: Convert to fraction form
    839,842,687.20/1,259,764,030.80 = 257,666,786.40/x
  3. Step 3: Cross multiply
    839,842,687.20x = 1,259,764,030.80 × 257,666,786.40
  4. Step 4: Simplify right side
    839,842,687.20x = 324,599,349,438,546,624
  5. Step 5: Solve for x
    x = 324,599,349,438,546,624/839,842,687.20
  6. Step 6: Final answer
    x = 386,500,179.60

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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.