Home / 986,000.80-1,479,001.20-947,293.60

Finding the Fourth Proportional to 986,000.80, 1,479,001.20 and 947,293.60

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Solution

The fourth proportional to 986,000.80, 1,479,001.20 and 947,293.60 is: 1,420,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,000.80 : 1,479,001.20 = 947,293.60 : x
  2. Step 2: Convert to fraction form
    986,000.80/1,479,001.20 = 947,293.60/x
  3. Step 3: Cross multiply
    986,000.80x = 1,479,001.20 × 947,293.60
  4. Step 4: Simplify right side
    986,000.80x = 1,401,048,371,152.32
  5. Step 5: Solve for x
    x = 1,401,048,371,152.32/986,000.80
  6. Step 6: Final answer
    x = 1,420,940.40

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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.