Home / 7,319,926.80-10,979,890.20-5,430,358.80

Finding the Fourth Proportional to 7,319,926.80, 10,979,890.20 and 5,430,358.80

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Solution

The fourth proportional to 7,319,926.80, 10,979,890.20 and 5,430,358.80 is: 8,145,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319,926.80 : 10,979,890.20 = 5,430,358.80 : x
  2. Step 2: Convert to fraction form
    7,319,926.80/10,979,890.20 = 5,430,358.80/x
  3. Step 3: Cross multiply
    7,319,926.80x = 10,979,890.20 × 5,430,358.80
  4. Step 4: Simplify right side
    7,319,926.80x = 59,624,743,370,603.76
  5. Step 5: Solve for x
    x = 59,624,743,370,603.76/7,319,926.80
  6. Step 6: Final answer
    x = 8,145,538.20

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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.