Home / 515,619,451.88-711,572,030.93-289,598,265.80

Finding the Fourth Proportional to 515,619,451.88, 711,572,030.93 and 289,598,265.80

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Solution

The fourth proportional to 515,619,451.88, 711,572,030.93 and 289,598,265.80 is: 399,655,260.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,619,451.88 : 711,572,030.93 = 289,598,265.80 : x
  2. Step 2: Convert to fraction form
    515,619,451.88/711,572,030.93 = 289,598,265.80/x
  3. Step 3: Cross multiply
    515,619,451.88x = 711,572,030.93 × 289,598,265.80
  4. Step 4: Simplify right side
    515,619,451.88x = 206,070,026,149,111,968
  5. Step 5: Solve for x
    x = 206,070,026,149,111,968/515,619,451.88
  6. Step 6: Final answer
    x = 399,655,260.09

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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.