Home / 1,645,442.25-2,270,697.22-920,289.40

Finding the Fourth Proportional to 1,645,442.25, 2,270,697.22 and 920,289.40

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Solution

The fourth proportional to 1,645,442.25, 2,270,697.22 and 920,289.40 is: 1,269,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645,442.25 : 2,270,697.22 = 920,289.40 : x
  2. Step 2: Convert to fraction form
    1,645,442.25/2,270,697.22 = 920,289.40/x
  3. Step 3: Cross multiply
    1,645,442.25x = 2,270,697.22 × 920,289.40
  4. Step 4: Simplify right side
    1,645,442.25x = 2,089,698,572,472.46
  5. Step 5: Solve for x
    x = 2,089,698,572,472.46/1,645,442.25
  6. Step 6: Final answer
    x = 1,269,992.05

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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.