Home / 678,605,723.30-1,017,918,738.68-258,450,299.10

Finding the Fourth Proportional to 678,605,723.30, 1,017,918,738.68 and 258,450,299.10

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Solution

The fourth proportional to 678,605,723.30, 1,017,918,738.68 and 258,450,299.10 is: 387,679,315.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,605,723.30 : 1,017,918,738.68 = 258,450,299.10 : x
  2. Step 2: Convert to fraction form
    678,605,723.30/1,017,918,738.68 = 258,450,299.10/x
  3. Step 3: Cross multiply
    678,605,723.30x = 1,017,918,738.68 × 258,450,299.10
  4. Step 4: Simplify right side
    678,605,723.30x = 263,081,402,470,048,480
  5. Step 5: Solve for x
    x = 263,081,402,470,048,480/678,605,723.30
  6. Step 6: Final answer
    x = 387,679,315.74

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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.