Home / 690,147,516.23-952,485,298.94-388,742,748.11

Finding the Fourth Proportional to 690,147,516.23, 952,485,298.94 and 388,742,748.11

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Solution

The fourth proportional to 690,147,516.23, 952,485,298.94 and 388,742,748.11 is: 536,511,026.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,147,516.23 : 952,485,298.94 = 388,742,748.11 : x
  2. Step 2: Convert to fraction form
    690,147,516.23/952,485,298.94 = 388,742,748.11/x
  3. Step 3: Cross multiply
    690,147,516.23x = 952,485,298.94 × 388,742,748.11
  4. Step 4: Simplify right side
    690,147,516.23x = 370,271,752,642,366,720
  5. Step 5: Solve for x
    x = 370,271,752,642,366,720/690,147,516.23
  6. Step 6: Final answer
    x = 536,511,026.90

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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.