Home / 820,509,280.80-1,230,763,921.20-238,242,400.80

Finding the Fourth Proportional to 820,509,280.80, 1,230,763,921.20 and 238,242,400.80

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Solution

The fourth proportional to 820,509,280.80, 1,230,763,921.20 and 238,242,400.80 is: 357,363,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,509,280.80 : 1,230,763,921.20 = 238,242,400.80 : x
  2. Step 2: Convert to fraction form
    820,509,280.80/1,230,763,921.20 = 238,242,400.80/x
  3. Step 3: Cross multiply
    820,509,280.80x = 1,230,763,921.20 × 238,242,400.80
  4. Step 4: Simplify right side
    820,509,280.80x = 293,220,151,404,710,016
  5. Step 5: Solve for x
    x = 293,220,151,404,710,016/820,509,280.80
  6. Step 6: Final answer
    x = 357,363,601.20

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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.