Home / 660,480,712.20-990,717,131.70-169,193,032.20

Finding the Fourth Proportional to 660,480,712.20, 990,717,131.70 and 169,193,032.20

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Solution

The fourth proportional to 660,480,712.20, 990,717,131.70 and 169,193,032.20 is: 253,788,539.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,480,712.20 : 990,717,131.70 = 169,193,032.20 : x
  2. Step 2: Convert to fraction form
    660,480,712.20/990,717,131.70 = 169,193,032.20/x
  3. Step 3: Cross multiply
    660,480,712.20x = 990,717,131.70 × 169,193,032.20
  4. Step 4: Simplify right side
    660,480,712.20x = 167,622,435,564,809,728
  5. Step 5: Solve for x
    x = 167,622,435,564,809,728/660,480,712.20
  6. Step 6: Final answer
    x = 253,788,539.87

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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.