Home / 1,020,143.20-1,528,902.60-620,359.60

Finding the Fourth Proportional to 1,020,143.20, 1,528,902.60 and 620,359.60

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Solution

The fourth proportional to 1,020,143.20, 1,528,902.60 and 620,359.60 is: 929,741.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,143.20 : 1,528,902.60 = 620,359.60 : x
  2. Step 2: Convert to fraction form
    1,020,143.20/1,528,902.60 = 620,359.60/x
  3. Step 3: Cross multiply
    1,020,143.20x = 1,528,902.60 × 620,359.60
  4. Step 4: Simplify right side
    1,020,143.20x = 948,469,405,374.96
  5. Step 5: Solve for x
    x = 948,469,405,374.96/1,020,143.20
  6. Step 6: Final answer
    x = 929,741.44

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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.