Home / 1,405,385.60-1,939,431.71-760,805.32

Finding the Fourth Proportional to 1,405,385.60, 1,939,431.71 and 760,805.32

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Solution

The fourth proportional to 1,405,385.60, 1,939,431.71 and 760,805.32 is: 1,049,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,385.60 : 1,939,431.71 = 760,805.32 : x
  2. Step 2: Convert to fraction form
    1,405,385.60/1,939,431.71 = 760,805.32/x
  3. Step 3: Cross multiply
    1,405,385.60x = 1,939,431.71 × 760,805.32
  4. Step 4: Simplify right side
    1,405,385.60x = 1,475,529,962,744.70
  5. Step 5: Solve for x
    x = 1,475,529,962,744.70/1,405,385.60
  6. Step 6: Final answer
    x = 1,049,911.12

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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.