Home / 1,959,639,820.40-2,940,803,423.40-869,904,959.60

Finding the Fourth Proportional to 1,959,639,820.40, 2,940,803,423.40 and 869,904,959.60

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Solution

The fourth proportional to 1,959,639,820.40, 2,940,803,423.40 and 869,904,959.60 is: 1,305,453,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959,639,820.40 : 2,940,803,423.40 = 869,904,959.60 : x
  2. Step 2: Convert to fraction form
    1,959,639,820.40/2,940,803,423.40 = 869,904,959.60/x
  3. Step 3: Cross multiply
    1,959,639,820.40x = 2,940,803,423.40 × 869,904,959.60
  4. Step 4: Simplify right side
    1,959,639,820.40x = 2,558,219,483,224,318,976
  5. Step 5: Solve for x
    x = 2,558,219,483,224,318,976/1,959,639,820.40
  6. Step 6: Final answer
    x = 1,305,453,918.93

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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.