Home / 680,821.80-1,021,451.40-456,435.60

Finding the Fourth Proportional to 680,821.80, 1,021,451.40 and 456,435.60

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Solution

The fourth proportional to 680,821.80, 1,021,451.40 and 456,435.60 is: 684,800.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,821.80 : 1,021,451.40 = 456,435.60 : x
  2. Step 2: Convert to fraction form
    680,821.80/1,021,451.40 = 456,435.60/x
  3. Step 3: Cross multiply
    680,821.80x = 1,021,451.40 × 456,435.60
  4. Step 4: Simplify right side
    680,821.80x = 466,226,782,629.84
  5. Step 5: Solve for x
    x = 466,226,782,629.84/680,821.80
  6. Step 6: Final answer
    x = 684,800.02

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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.