Home / 680,566.20-1,021,238.10-260,143.80

Finding the Fourth Proportional to 680,566.20, 1,021,238.10 and 260,143.80

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Solution

The fourth proportional to 680,566.20, 1,021,238.10 and 260,143.80 is: 390,364.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,566.20 : 1,021,238.10 = 260,143.80 : x
  2. Step 2: Convert to fraction form
    680,566.20/1,021,238.10 = 260,143.80/x
  3. Step 3: Cross multiply
    680,566.20x = 1,021,238.10 × 260,143.80
  4. Step 4: Simplify right side
    680,566.20x = 265,668,760,038.78
  5. Step 5: Solve for x
    x = 265,668,760,038.78/680,566.20
  6. Step 6: Final answer
    x = 390,364.32

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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.