Home / 515,619,457.88-711,572,039.22-289,598,271.80

Finding the Fourth Proportional to 515,619,457.88, 711,572,039.22 and 289,598,271.80

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Solution

The fourth proportional to 515,619,457.88, 711,572,039.22 and 289,598,271.80 is: 399,655,268.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,619,457.88 : 711,572,039.22 = 289,598,271.80 : x
  2. Step 2: Convert to fraction form
    515,619,457.88/711,572,039.22 = 289,598,271.80/x
  3. Step 3: Cross multiply
    515,619,457.88x = 711,572,039.22 × 289,598,271.80
  4. Step 4: Simplify right side
    515,619,457.88x = 206,070,032,819,313,824
  5. Step 5: Solve for x
    x = 206,070,032,819,313,824/515,619,457.88
  6. Step 6: Final answer
    x = 399,655,268.38

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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.