Home / 5,379,689.60-8,085,280.80-5,285,211.20

Finding the Fourth Proportional to 5,379,689.60, 8,085,280.80 and 5,285,211.20

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Solution

The fourth proportional to 5,379,689.60, 8,085,280.80 and 5,285,211.20 is: 7,943,286.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379,689.60 : 8,085,280.80 = 5,285,211.20 : x
  2. Step 2: Convert to fraction form
    5,379,689.60/8,085,280.80 = 5,285,211.20/x
  3. Step 3: Cross multiply
    5,379,689.60x = 8,085,280.80 × 5,285,211.20
  4. Step 4: Simplify right side
    5,379,689.60x = 42,732,416,639,304.96
  5. Step 5: Solve for x
    x = 42,732,416,639,304.96/5,379,689.60
  6. Step 6: Final answer
    x = 7,943,286.66

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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.