Home / 1,390,763,998.80-2,086,145,998.20-355,705,887.60

Finding the Fourth Proportional to 1,390,763,998.80, 2,086,145,998.20 and 355,705,887.60

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Solution

The fourth proportional to 1,390,763,998.80, 2,086,145,998.20 and 355,705,887.60 is: 533,558,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,763,998.80 : 2,086,145,998.20 = 355,705,887.60 : x
  2. Step 2: Convert to fraction form
    1,390,763,998.80/2,086,145,998.20 = 355,705,887.60/x
  3. Step 3: Cross multiply
    1,390,763,998.80x = 2,086,145,998.20 × 355,705,887.60
  4. Step 4: Simplify right side
    1,390,763,998.80x = 742,054,413,952,919,040
  5. Step 5: Solve for x
    x = 742,054,413,952,919,040/1,390,763,998.80
  6. Step 6: Final answer
    x = 533,558,831.40

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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.