Home / 678,852.80-1,018,279.20-668,355.20

Finding the Fourth Proportional to 678,852.80, 1,018,279.20 and 668,355.20

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Solution

The fourth proportional to 678,852.80, 1,018,279.20 and 668,355.20 is: 1,002,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,852.80 : 1,018,279.20 = 668,355.20 : x
  2. Step 2: Convert to fraction form
    678,852.80/1,018,279.20 = 668,355.20/x
  3. Step 3: Cross multiply
    678,852.80x = 1,018,279.20 × 668,355.20
  4. Step 4: Simplify right side
    678,852.80x = 680,572,198,371.84
  5. Step 5: Solve for x
    x = 680,572,198,371.84/678,852.80
  6. Step 6: Final answer
    x = 1,002,532.80

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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.