Home / 525,072-787,649.40-258,687.18

Finding the Fourth Proportional to 525,072, 787,649.40 and 258,687.18

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Solution

The fourth proportional to 525,072, 787,649.40 and 258,687.18 is: 388,051.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,072 : 787,649.40 = 258,687.18 : x
  2. Step 2: Convert to fraction form
    525,072/787,649.40 = 258,687.18/x
  3. Step 3: Cross multiply
    525,072x = 787,649.40 × 258,687.18
  4. Step 4: Simplify right side
    525,072x = 203,754,802,114.69
  5. Step 5: Solve for x
    x = 203,754,802,114.69/525,072
  6. Step 6: Final answer
    x = 388,051.17

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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.