Home / 639,016,970.96-959,114,678.58-324,104,016.47

Finding the Fourth Proportional to 639,016,970.96, 959,114,678.58 and 324,104,016.47

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Solution

The fourth proportional to 639,016,970.96, 959,114,678.58 and 324,104,016.47 is: 486,454,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,016,970.96 : 959,114,678.58 = 324,104,016.47 : x
  2. Step 2: Convert to fraction form
    639,016,970.96/959,114,678.58 = 324,104,016.47/x
  3. Step 3: Cross multiply
    639,016,970.96x = 959,114,678.58 × 324,104,016.47
  4. Step 4: Simplify right side
    639,016,970.96x = 310,852,919,578,315,520
  5. Step 5: Solve for x
    x = 310,852,919,578,315,520/639,016,970.96
  6. Step 6: Final answer
    x = 486,454,873.20

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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.