Home / 421,277,647.68-631,976,920.32-130,170,189.12

Finding the Fourth Proportional to 421,277,647.68, 631,976,920.32 and 130,170,189.12

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Solution

The fourth proportional to 421,277,647.68, 631,976,920.32 and 130,170,189.12 is: 195,273,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,277,647.68 : 631,976,920.32 = 130,170,189.12 : x
  2. Step 2: Convert to fraction form
    421,277,647.68/631,976,920.32 = 130,170,189.12/x
  3. Step 3: Cross multiply
    421,277,647.68x = 631,976,920.32 × 130,170,189.12
  4. Step 4: Simplify right side
    421,277,647.68x = 82,264,555,237,529,584
  5. Step 5: Solve for x
    x = 82,264,555,237,529,584/421,277,647.68
  6. Step 6: Final answer
    x = 195,273,961.70

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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.