Home / 839,842,901.20-1,259,764,351.80-257,667,000.40

Finding the Fourth Proportional to 839,842,901.20, 1,259,764,351.80 and 257,667,000.40

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Solution

The fourth proportional to 839,842,901.20, 1,259,764,351.80 and 257,667,000.40 is: 386,500,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,842,901.20 : 1,259,764,351.80 = 257,667,000.40 : x
  2. Step 2: Convert to fraction form
    839,842,901.20/1,259,764,351.80 = 257,667,000.40/x
  3. Step 3: Cross multiply
    839,842,901.20x = 1,259,764,351.80 × 257,667,000.40
  4. Step 4: Simplify right side
    839,842,901.20x = 324,599,701,739,156,352
  5. Step 5: Solve for x
    x = 324,599,701,739,156,352/839,842,901.20
  6. Step 6: Final answer
    x = 386,500,500.60

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Double scale
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Similar ratio
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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.