Home / 485,004,805.70-727,507,208.55-139,969,688.90

Finding the Fourth Proportional to 485,004,805.70, 727,507,208.55 and 139,969,688.90

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Solution

The fourth proportional to 485,004,805.70, 727,507,208.55 and 139,969,688.90 is: 209,954,533.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,004,805.70 : 727,507,208.55 = 139,969,688.90 : x
  2. Step 2: Convert to fraction form
    485,004,805.70/727,507,208.55 = 139,969,688.90/x
  3. Step 3: Cross multiply
    485,004,805.70x = 727,507,208.55 × 139,969,688.90
  4. Step 4: Simplify right side
    485,004,805.70x = 101,828,957,653,250,912
  5. Step 5: Solve for x
    x = 101,828,957,653,250,912/485,004,805.70
  6. Step 6: Final answer
    x = 209,954,533.35

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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.