Home / 324,315,639.63-486,473,459.45-81,978,543.63

Finding the Fourth Proportional to 324,315,639.63, 486,473,459.45 and 81,978,543.63

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Solution

The fourth proportional to 324,315,639.63, 486,473,459.45 and 81,978,543.63 is: 122,967,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,315,639.63 : 486,473,459.45 = 81,978,543.63 : x
  2. Step 2: Convert to fraction form
    324,315,639.63/486,473,459.45 = 81,978,543.63/x
  3. Step 3: Cross multiply
    324,315,639.63x = 486,473,459.45 × 81,978,543.63
  4. Step 4: Simplify right side
    324,315,639.63x = 39,880,385,719,948,968
  5. Step 5: Solve for x
    x = 39,880,385,719,948,968/324,315,639.63
  6. Step 6: Final answer
    x = 122,967,815.45

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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.