Home / 2,128,473,174.87-2,936,866,978.22-1,188,531,192.87

Finding the Fourth Proportional to 2,128,473,174.87, 2,936,866,978.22 and 1,188,531,192.87

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Solution

The fourth proportional to 2,128,473,174.87, 2,936,866,978.22 and 1,188,531,192.87 is: 1,639,935,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,473,174.87 : 2,936,866,978.22 = 1,188,531,192.87 : x
  2. Step 2: Convert to fraction form
    2,128,473,174.87/2,936,866,978.22 = 1,188,531,192.87/x
  3. Step 3: Cross multiply
    2,128,473,174.87x = 2,936,866,978.22 × 1,188,531,192.87
  4. Step 4: Simplify right side
    2,128,473,174.87x = 3,490,558,012,918,386,176
  5. Step 5: Solve for x
    x = 3,490,558,012,918,386,176/2,128,473,174.87
  6. Step 6: Final answer
    x = 1,639,935,167.67

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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.