Home / 480,653,992.80-720,980,989.20-319,095,928.80

Finding the Fourth Proportional to 480,653,992.80, 720,980,989.20 and 319,095,928.80

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Solution

The fourth proportional to 480,653,992.80, 720,980,989.20 and 319,095,928.80 is: 478,643,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,653,992.80 : 720,980,989.20 = 319,095,928.80 : x
  2. Step 2: Convert to fraction form
    480,653,992.80/720,980,989.20 = 319,095,928.80/x
  3. Step 3: Cross multiply
    480,653,992.80x = 720,980,989.20 × 319,095,928.80
  4. Step 4: Simplify right side
    480,653,992.80x = 230,062,098,395,916,800
  5. Step 5: Solve for x
    x = 230,062,098,395,916,800/480,653,992.80
  6. Step 6: Final answer
    x = 478,643,893.20

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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.