Home / 1,020,400.20-1,529,288.10-620,616.60

Finding the Fourth Proportional to 1,020,400.20, 1,529,288.10 and 620,616.60

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Solution

The fourth proportional to 1,020,400.20, 1,529,288.10 and 620,616.60 is: 930,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,400.20 : 1,529,288.10 = 620,616.60 : x
  2. Step 2: Convert to fraction form
    1,020,400.20/1,529,288.10 = 620,616.60/x
  3. Step 3: Cross multiply
    1,020,400.20x = 1,529,288.10 × 620,616.60
  4. Step 4: Simplify right side
    1,020,400.20x = 949,101,581,042.46
  5. Step 5: Solve for x
    x = 949,101,581,042.46/1,020,400.20
  6. Step 6: Final answer
    x = 930,126.81

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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.