Home / 1,242,148,251.40-1,861,639,863.90-660,161,307.40

Finding the Fourth Proportional to 1,242,148,251.40, 1,861,639,863.90 and 660,161,307.40

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Solution

The fourth proportional to 1,242,148,251.40, 1,861,639,863.90 and 660,161,307.40 is: 989,400,906.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,148,251.40 : 1,861,639,863.90 = 660,161,307.40 : x
  2. Step 2: Convert to fraction form
    1,242,148,251.40/1,861,639,863.90 = 660,161,307.40/x
  3. Step 3: Cross multiply
    1,242,148,251.40x = 1,861,639,863.90 × 660,161,307.40
  4. Step 4: Simplify right side
    1,242,148,251.40x = 1,228,982,606,460,182,016
  5. Step 5: Solve for x
    x = 1,228,982,606,460,182,016/1,242,148,251.40
  6. Step 6: Final answer
    x = 989,400,906.92

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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.