Home / 421,277,506.56-631,976,708.40-130,170,048

Finding the Fourth Proportional to 421,277,506.56, 631,976,708.40 and 130,170,048

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Solution

The fourth proportional to 421,277,506.56, 631,976,708.40 and 130,170,048 is: 195,273,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,277,506.56 : 631,976,708.40 = 130,170,048 : x
  2. Step 2: Convert to fraction form
    421,277,506.56/631,976,708.40 = 130,170,048/x
  3. Step 3: Cross multiply
    421,277,506.56x = 631,976,708.40 × 130,170,048
  4. Step 4: Simplify right side
    421,277,506.56x = 82,264,438,467,310,000
  5. Step 5: Solve for x
    x = 82,264,438,467,310,000/421,277,506.56
  6. Step 6: Final answer
    x = 195,273,749.93

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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.