Home / 1,079,085.80-1,619,211.90-480,139.40

Finding the Fourth Proportional to 1,079,085.80, 1,619,211.90 and 480,139.40

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Solution

The fourth proportional to 1,079,085.80, 1,619,211.90 and 480,139.40 is: 720,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,085.80 : 1,619,211.90 = 480,139.40 : x
  2. Step 2: Convert to fraction form
    1,079,085.80/1,619,211.90 = 480,139.40/x
  3. Step 3: Cross multiply
    1,079,085.80x = 1,619,211.90 × 480,139.40
  4. Step 4: Simplify right side
    1,079,085.80x = 777,447,430,138.86
  5. Step 5: Solve for x
    x = 777,447,430,138.86/1,079,085.80
  6. Step 6: Final answer
    x = 720,468.59

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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.