Home / 1,390,809,970.20-2,086,214,955.30-839,811,941.40

Finding the Fourth Proportional to 1,390,809,970.20, 2,086,214,955.30 and 839,811,941.40

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Solution

The fourth proportional to 1,390,809,970.20, 2,086,214,955.30 and 839,811,941.40 is: 1,259,717,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,809,970.20 : 2,086,214,955.30 = 839,811,941.40 : x
  2. Step 2: Convert to fraction form
    1,390,809,970.20/2,086,214,955.30 = 839,811,941.40/x
  3. Step 3: Cross multiply
    1,390,809,970.20x = 2,086,214,955.30 × 839,811,941.40
  4. Step 4: Simplify right side
    1,390,809,970.20x = 1,752,028,231,788,207,104
  5. Step 5: Solve for x
    x = 1,752,028,231,788,207,104/1,390,809,970.20
  6. Step 6: Final answer
    x = 1,259,717,912.10

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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.