Home / 1,321,127,790.90-1,982,464,434.65-492,653,787.18

Finding the Fourth Proportional to 1,321,127,790.90, 1,982,464,434.65 and 492,653,787.18

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Solution

The fourth proportional to 1,321,127,790.90, 1,982,464,434.65 and 492,653,787.18 is: 739,268,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,127,790.90 : 1,982,464,434.65 = 492,653,787.18 : x
  2. Step 2: Convert to fraction form
    1,321,127,790.90/1,982,464,434.65 = 492,653,787.18/x
  3. Step 3: Cross multiply
    1,321,127,790.90x = 1,982,464,434.65 × 492,653,787.18
  4. Step 4: Simplify right side
    1,321,127,790.90x = 976,668,611,679,980,160
  5. Step 5: Solve for x
    x = 976,668,611,679,980,160/1,321,127,790.90
  6. Step 6: Final answer
    x = 739,268,841.67

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Double scale
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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.