Home / 1,247,513,773.60-1,869,255,121.20-786,627,143.20

Finding the Fourth Proportional to 1,247,513,773.60, 1,869,255,121.20 and 786,627,143.20

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Solution

The fourth proportional to 1,247,513,773.60, 1,869,255,121.20 and 786,627,143.20 is: 1,178,669,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,513,773.60 : 1,869,255,121.20 = 786,627,143.20 : x
  2. Step 2: Convert to fraction form
    1,247,513,773.60/1,869,255,121.20 = 786,627,143.20/x
  3. Step 3: Cross multiply
    1,247,513,773.60x = 1,869,255,121.20 × 786,627,143.20
  4. Step 4: Simplify right side
    1,247,513,773.60x = 1,470,406,815,901,525,760
  5. Step 5: Solve for x
    x = 1,470,406,815,901,525,760/1,247,513,773.60
  6. Step 6: Final answer
    x = 1,178,669,804.71

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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.