Home / 665,416,386.35-918,212,989.03-368,052,228.44

Finding the Fourth Proportional to 665,416,386.35, 918,212,989.03 and 368,052,228.44

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Solution

The fourth proportional to 665,416,386.35, 918,212,989.03 and 368,052,228.44 is: 507,877,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,416,386.35 : 918,212,989.03 = 368,052,228.44 : x
  2. Step 2: Convert to fraction form
    665,416,386.35/918,212,989.03 = 368,052,228.44/x
  3. Step 3: Cross multiply
    665,416,386.35x = 918,212,989.03 × 368,052,228.44
  4. Step 4: Simplify right side
    665,416,386.35x = 337,950,336,792,976,896
  5. Step 5: Solve for x
    x = 337,950,336,792,976,896/665,416,386.35
  6. Step 6: Final answer
    x = 507,877,989.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.