Home / 681,719.20-1,021,810.80-326,903.20

Finding the Fourth Proportional to 681,719.20, 1,021,810.80 and 326,903.20

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Solution

The fourth proportional to 681,719.20, 1,021,810.80 and 326,903.20 is: 489,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,719.20 : 1,021,810.80 = 326,903.20 : x
  2. Step 2: Convert to fraction form
    681,719.20/1,021,810.80 = 326,903.20/x
  3. Step 3: Cross multiply
    681,719.20x = 1,021,810.80 × 326,903.20
  4. Step 4: Simplify right side
    681,719.20x = 334,033,220,314.56
  5. Step 5: Solve for x
    x = 334,033,220,314.56/681,719.20
  6. Step 6: Final answer
    x = 489,986.52

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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.