Home / 648,195,745.92-972,296,112.06-156,908,211.72

Finding the Fourth Proportional to 648,195,745.92, 972,296,112.06 and 156,908,211.72

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Solution

The fourth proportional to 648,195,745.92, 972,296,112.06 and 156,908,211.72 is: 235,362,921.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,195,745.92 : 972,296,112.06 = 156,908,211.72 : x
  2. Step 2: Convert to fraction form
    648,195,745.92/972,296,112.06 = 156,908,211.72/x
  3. Step 3: Cross multiply
    648,195,745.92x = 972,296,112.06 × 156,908,211.72
  4. Step 4: Simplify right side
    648,195,745.92x = 152,561,244,205,643,328
  5. Step 5: Solve for x
    x = 152,561,244,205,643,328/648,195,745.92
  6. Step 6: Final answer
    x = 235,362,921.10

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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.