Home / 1,242,163,679.40-1,861,663,005.90-660,176,735.40

Finding the Fourth Proportional to 1,242,163,679.40, 1,861,663,005.90 and 660,176,735.40

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Solution

The fourth proportional to 1,242,163,679.40, 1,861,663,005.90 and 660,176,735.40 is: 989,424,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,163,679.40 : 1,861,663,005.90 = 660,176,735.40 : x
  2. Step 2: Convert to fraction form
    1,242,163,679.40/1,861,663,005.90 = 660,176,735.40/x
  3. Step 3: Cross multiply
    1,242,163,679.40x = 1,861,663,005.90 × 660,176,735.40
  4. Step 4: Simplify right side
    1,242,163,679.40x = 1,229,026,605,650,012,928
  5. Step 5: Solve for x
    x = 1,229,026,605,650,012,928/1,242,163,679.40
  6. Step 6: Final answer
    x = 989,424,039.71

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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.