Home / 7,120,675.20-10,689,307.20-4,283,990.40

Finding the Fourth Proportional to 7,120,675.20, 10,689,307.20 and 4,283,990.40

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Solution

The fourth proportional to 7,120,675.20, 10,689,307.20 and 4,283,990.40 is: 6,430,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120,675.20 : 10,689,307.20 = 4,283,990.40 : x
  2. Step 2: Convert to fraction form
    7,120,675.20/10,689,307.20 = 4,283,990.40/x
  3. Step 3: Cross multiply
    7,120,675.20x = 10,689,307.20 × 4,283,990.40
  4. Step 4: Simplify right side
    7,120,675.20x = 45,792,889,427,450.88
  5. Step 5: Solve for x
    x = 45,792,889,427,450.88/7,120,675.20
  6. Step 6: Final answer
    x = 6,430,975.73

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1.5x scale

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.