Home / 678,605,724.43-1,017,918,740.36-258,450,300.23

Finding the Fourth Proportional to 678,605,724.43, 1,017,918,740.36 and 258,450,300.23

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Solution

The fourth proportional to 678,605,724.43, 1,017,918,740.36 and 258,450,300.23 is: 387,679,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,605,724.43 : 1,017,918,740.36 = 258,450,300.23 : x
  2. Step 2: Convert to fraction form
    678,605,724.43/1,017,918,740.36 = 258,450,300.23/x
  3. Step 3: Cross multiply
    678,605,724.43x = 1,017,918,740.36 × 258,450,300.23
  4. Step 4: Simplify right side
    678,605,724.43x = 263,081,404,051,341,920
  5. Step 5: Solve for x
    x = 263,081,404,051,341,920/678,605,724.43
  6. Step 6: Final answer
    x = 387,679,317.43

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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.