Home / 859,880.40-1,290,403.80-559,629.60

Finding the Fourth Proportional to 859,880.40, 1,290,403.80 and 559,629.60

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Solution

The fourth proportional to 859,880.40, 1,290,403.80 and 559,629.60 is: 839,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,880.40 : 1,290,403.80 = 559,629.60 : x
  2. Step 2: Convert to fraction form
    859,880.40/1,290,403.80 = 559,629.60/x
  3. Step 3: Cross multiply
    859,880.40x = 1,290,403.80 × 559,629.60
  4. Step 4: Simplify right side
    859,880.40x = 722,148,162,432.48
  5. Step 5: Solve for x
    x = 722,148,162,432.48/859,880.40
  6. Step 6: Final answer
    x = 839,823.96

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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.