Home / 680,104.01-1,020,280.55-280,526.80

Finding the Fourth Proportional to 680,104.01, 1,020,280.55 and 280,526.80

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Solution

The fourth proportional to 680,104.01, 1,020,280.55 and 280,526.80 is: 420,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,104.01 : 1,020,280.55 = 280,526.80 : x
  2. Step 2: Convert to fraction form
    680,104.01/1,020,280.55 = 280,526.80/x
  3. Step 3: Cross multiply
    680,104.01x = 1,020,280.55 × 280,526.80
  4. Step 4: Simplify right side
    680,104.01x = 286,216,039,770.41
  5. Step 5: Solve for x
    x = 286,216,039,770.41/680,104.01
  6. Step 6: Final answer
    x = 420,841.57

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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.