Home / 1,678,845.92-2,317,109.56-990,478.08

Finding the Fourth Proportional to 1,678,845.92, 2,317,109.56 and 990,478.08

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Solution

The fourth proportional to 1,678,845.92, 2,317,109.56 and 990,478.08 is: 1,367,038.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,845.92 : 2,317,109.56 = 990,478.08 : x
  2. Step 2: Convert to fraction form
    1,678,845.92/2,317,109.56 = 990,478.08/x
  3. Step 3: Cross multiply
    1,678,845.92x = 2,317,109.56 × 990,478.08
  4. Step 4: Simplify right side
    1,678,845.92x = 2,295,046,225,662.25
  5. Step 5: Solve for x
    x = 2,295,046,225,662.25/1,678,845.92
  6. Step 6: Final answer
    x = 1,367,038.04

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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.