Home / 1,420,512,930.40-2,130,769,395.60-808,983,407.20

Finding the Fourth Proportional to 1,420,512,930.40, 2,130,769,395.60 and 808,983,407.20

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Solution

The fourth proportional to 1,420,512,930.40, 2,130,769,395.60 and 808,983,407.20 is: 1,213,475,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,512,930.40 : 2,130,769,395.60 = 808,983,407.20 : x
  2. Step 2: Convert to fraction form
    1,420,512,930.40/2,130,769,395.60 = 808,983,407.20/x
  3. Step 3: Cross multiply
    1,420,512,930.40x = 2,130,769,395.60 × 808,983,407.20
  4. Step 4: Simplify right side
    1,420,512,930.40x = 1,723,757,085,609,972,736
  5. Step 5: Solve for x
    x = 1,723,757,085,609,972,736/1,420,512,930.40
  6. Step 6: Final answer
    x = 1,213,475,110.80

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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.