Home / 525,851,051.12-725,695,817.54-290,897,660.78

Finding the Fourth Proportional to 525,851,051.12, 725,695,817.54 and 290,897,660.78

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Solution

The fourth proportional to 525,851,051.12, 725,695,817.54 and 290,897,660.78 is: 401,450,591.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,851,051.12 : 725,695,817.54 = 290,897,660.78 : x
  2. Step 2: Convert to fraction form
    525,851,051.12/725,695,817.54 = 290,897,660.78/x
  3. Step 3: Cross multiply
    525,851,051.12x = 725,695,817.54 × 290,897,660.78
  4. Step 4: Simplify right side
    525,851,051.12x = 211,103,215,760,215,648
  5. Step 5: Solve for x
    x = 211,103,215,760,215,648/525,851,051.12
  6. Step 6: Final answer
    x = 401,450,591.97

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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.