Home / 579,112.80-868,669.20-369,679.20

Finding the Fourth Proportional to 579,112.80, 868,669.20 and 369,679.20

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Solution

The fourth proportional to 579,112.80, 868,669.20 and 369,679.20 is: 554,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,112.80 : 868,669.20 = 369,679.20 : x
  2. Step 2: Convert to fraction form
    579,112.80/868,669.20 = 369,679.20/x
  3. Step 3: Cross multiply
    579,112.80x = 868,669.20 × 369,679.20
  4. Step 4: Simplify right side
    579,112.80x = 321,128,934,920.64
  5. Step 5: Solve for x
    x = 321,128,934,920.64/579,112.80
  6. Step 6: Final answer
    x = 554,518.80

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1.5x scale

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.