Home / 989,815.70-1,483,739.40-456,406.40

Finding the Fourth Proportional to 989,815.70, 1,483,739.40 and 456,406.40

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Solution

The fourth proportional to 989,815.70, 1,483,739.40 and 456,406.40 is: 684,155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,815.70 : 1,483,739.40 = 456,406.40 : x
  2. Step 2: Convert to fraction form
    989,815.70/1,483,739.40 = 456,406.40/x
  3. Step 3: Cross multiply
    989,815.70x = 1,483,739.40 × 456,406.40
  4. Step 4: Simplify right side
    989,815.70x = 677,188,158,092.16
  5. Step 5: Solve for x
    x = 677,188,158,092.16/989,815.70
  6. Step 6: Final answer
    x = 684,155.81

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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.