Home / 2,989,609,993.60-4,484,391,370.80-778,815,433.60

Finding the Fourth Proportional to 2,989,609,993.60, 4,484,391,370.80 and 778,815,433.60

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Solution

The fourth proportional to 2,989,609,993.60, 4,484,391,370.80 and 778,815,433.60 is: 1,168,216,997.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,609,993.60 : 4,484,391,370.80 = 778,815,433.60 : x
  2. Step 2: Convert to fraction form
    2,989,609,993.60/4,484,391,370.80 = 778,815,433.60/x
  3. Step 3: Cross multiply
    2,989,609,993.60x = 4,484,391,370.80 × 778,815,433.60
  4. Step 4: Simplify right side
    2,989,609,993.60x = 3,492,513,209,881,700,864
  5. Step 5: Solve for x
    x = 3,492,513,209,881,700,864/2,989,609,993.60
  6. Step 6: Final answer
    x = 1,168,216,997.32

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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.