Home / 642,639,993.84-886,861,899-364,172,258.16

Finding the Fourth Proportional to 642,639,993.84, 886,861,899 and 364,172,258.16

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Solution

The fourth proportional to 642,639,993.84, 886,861,899 and 364,172,258.16 is: 502,568,317.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,639,993.84 : 886,861,899 = 364,172,258.16 : x
  2. Step 2: Convert to fraction form
    642,639,993.84/886,861,899 = 364,172,258.16/x
  3. Step 3: Cross multiply
    642,639,993.84x = 886,861,899 × 364,172,258.16
  4. Step 4: Simplify right side
    642,639,993.84x = 322,970,500,434,895,872
  5. Step 5: Solve for x
    x = 322,970,500,434,895,872/642,639,993.84
  6. Step 6: Final answer
    x = 502,568,317.46

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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.