Home / 291,128,262,960.78-436,714,351,345.20-86,905,325,463.48

Finding the Fourth Proportional to 291,128,262,960.78, 436,714,351,345.20 and 86,905,325,463.48

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Solution

The fourth proportional to 291,128,262,960.78, 436,714,351,345.20 and 86,905,325,463.48 is: 130,364,542,597.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,128,262,960.78 : 436,714,351,345.20 = 86,905,325,463.48 : x
  2. Step 2: Convert to fraction form
    291,128,262,960.78/436,714,351,345.20 = 86,905,325,463.48/x
  3. Step 3: Cross multiply
    291,128,262,960.78x = 436,714,351,345.20 × 86,905,325,463.48
  4. Step 4: Simplify right side
    291,128,262,960.78x = 37,952,802,838,227,160,399,872
  5. Step 5: Solve for x
    x = 37,952,802,838,227,160,399,872/291,128,262,960.78
  6. Step 6: Final answer
    x = 130,364,542,597.98

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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.