Home / 690,147,516.48-952,485,299.28-388,742,748.36

Finding the Fourth Proportional to 690,147,516.48, 952,485,299.28 and 388,742,748.36

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Solution

The fourth proportional to 690,147,516.48, 952,485,299.28 and 388,742,748.36 is: 536,511,027.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,147,516.48 : 952,485,299.28 = 388,742,748.36 : x
  2. Step 2: Convert to fraction form
    690,147,516.48/952,485,299.28 = 388,742,748.36/x
  3. Step 3: Cross multiply
    690,147,516.48x = 952,485,299.28 × 388,742,748.36
  4. Step 4: Simplify right side
    690,147,516.48x = 370,271,753,014,604,352
  5. Step 5: Solve for x
    x = 370,271,753,014,604,352/690,147,516.48
  6. Step 6: Final answer
    x = 536,511,027.24

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1.5x scale

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.