Home / 1,377,991,384.02-1,901,631,117.78-783,279,511.74

Finding the Fourth Proportional to 1,377,991,384.02, 1,901,631,117.78 and 783,279,511.74

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Solution

The fourth proportional to 1,377,991,384.02, 1,901,631,117.78 and 783,279,511.74 is: 1,080,927,435.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,991,384.02 : 1,901,631,117.78 = 783,279,511.74 : x
  2. Step 2: Convert to fraction form
    1,377,991,384.02/1,901,631,117.78 = 783,279,511.74/x
  3. Step 3: Cross multiply
    1,377,991,384.02x = 1,901,631,117.78 × 783,279,511.74
  4. Step 4: Simplify right side
    1,377,991,384.02x = 1,489,508,693,444,308,736
  5. Step 5: Solve for x
    x = 1,489,508,693,444,308,736/1,377,991,384.02
  6. Step 6: Final answer
    x = 1,080,927,435.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.