Home / 780,026.80-1,170,040.20-543,636.40

Finding the Fourth Proportional to 780,026.80, 1,170,040.20 and 543,636.40

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Solution

The fourth proportional to 780,026.80, 1,170,040.20 and 543,636.40 is: 815,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,026.80 : 1,170,040.20 = 543,636.40 : x
  2. Step 2: Convert to fraction form
    780,026.80/1,170,040.20 = 543,636.40/x
  3. Step 3: Cross multiply
    780,026.80x = 1,170,040.20 × 543,636.40
  4. Step 4: Simplify right side
    780,026.80x = 636,076,442,183.28
  5. Step 5: Solve for x
    x = 636,076,442,183.28/780,026.80
  6. Step 6: Final answer
    x = 815,454.60

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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.