Home / 308,516,435.42-462,777,365.81-78,485,763.38

Finding the Fourth Proportional to 308,516,435.42, 462,777,365.81 and 78,485,763.38

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Solution

The fourth proportional to 308,516,435.42, 462,777,365.81 and 78,485,763.38 is: 117,729,335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,516,435.42 : 462,777,365.81 = 78,485,763.38 : x
  2. Step 2: Convert to fraction form
    308,516,435.42/462,777,365.81 = 78,485,763.38/x
  3. Step 3: Cross multiply
    308,516,435.42x = 462,777,365.81 × 78,485,763.38
  4. Step 4: Simplify right side
    308,516,435.42x = 36,321,434,828,465,688
  5. Step 5: Solve for x
    x = 36,321,434,828,465,688/308,516,435.42
  6. Step 6: Final answer
    x = 117,729,335.16

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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.