Home / 680,155.83-1,020,364.97-380,974.23

Finding the Fourth Proportional to 680,155.83, 1,020,364.97 and 380,974.23

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Solution

The fourth proportional to 680,155.83, 1,020,364.97 and 380,974.23 is: 571,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,155.83 : 1,020,364.97 = 380,974.23 : x
  2. Step 2: Convert to fraction form
    680,155.83/1,020,364.97 = 380,974.23/x
  3. Step 3: Cross multiply
    680,155.83x = 1,020,364.97 × 380,974.23
  4. Step 4: Simplify right side
    680,155.83x = 388,732,756,859.85
  5. Step 5: Solve for x
    x = 388,732,756,859.85/680,155.83
  6. Step 6: Final answer
    x = 571,534.84

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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.