Home / 809,374.35-1,115,898.93-663,643.60

Finding the Fourth Proportional to 809,374.35, 1,115,898.93 and 663,643.60

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Solution

The fourth proportional to 809,374.35, 1,115,898.93 and 663,643.60 is: 914,977.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,374.35 : 1,115,898.93 = 663,643.60 : x
  2. Step 2: Convert to fraction form
    809,374.35/1,115,898.93 = 663,643.60/x
  3. Step 3: Cross multiply
    809,374.35x = 1,115,898.93 × 663,643.60
  4. Step 4: Simplify right side
    809,374.35x = 740,559,183,141.35
  5. Step 5: Solve for x
    x = 740,559,183,141.35/809,374.35
  6. Step 6: Final answer
    x = 914,977.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.