Home / 2,989,609,991.10-4,484,391,367.05-778,815,431.10

Finding the Fourth Proportional to 2,989,609,991.10, 4,484,391,367.05 and 778,815,431.10

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Solution

The fourth proportional to 2,989,609,991.10, 4,484,391,367.05 and 778,815,431.10 is: 1,168,216,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,609,991.10 : 4,484,391,367.05 = 778,815,431.10 : x
  2. Step 2: Convert to fraction form
    2,989,609,991.10/4,484,391,367.05 = 778,815,431.10/x
  3. Step 3: Cross multiply
    2,989,609,991.10x = 4,484,391,367.05 × 778,815,431.10
  4. Step 4: Simplify right side
    2,989,609,991.10x = 3,492,513,195,750,164,480
  5. Step 5: Solve for x
    x = 3,492,513,195,750,164,480/2,989,609,991.10
  6. Step 6: Final answer
    x = 1,168,216,993.57

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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.