Home / 1,420,485.38-1,959,783.57-808,484.86

Finding the Fourth Proportional to 1,420,485.38, 1,959,783.57 and 808,484.86

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Solution

The fourth proportional to 1,420,485.38, 1,959,783.57 and 808,484.86 is: 1,115,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,485.38 : 1,959,783.57 = 808,484.86 : x
  2. Step 2: Convert to fraction form
    1,420,485.38/1,959,783.57 = 808,484.86/x
  3. Step 3: Cross multiply
    1,420,485.38x = 1,959,783.57 × 808,484.86
  4. Step 4: Simplify right side
    1,420,485.38x = 1,584,455,345,221.75
  5. Step 5: Solve for x
    x = 1,584,455,345,221.75/1,420,485.38
  6. Step 6: Final answer
    x = 1,115,432.35

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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.