Home / 1,209,911.74-1,669,699.58-658,643.39

Finding the Fourth Proportional to 1,209,911.74, 1,669,699.58 and 658,643.39

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Solution

The fourth proportional to 1,209,911.74, 1,669,699.58 and 658,643.39 is: 908,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,911.74 : 1,669,699.58 = 658,643.39 : x
  2. Step 2: Convert to fraction form
    1,209,911.74/1,669,699.58 = 658,643.39/x
  3. Step 3: Cross multiply
    1,209,911.74x = 1,669,699.58 × 658,643.39
  4. Step 4: Simplify right side
    1,209,911.74x = 1,099,736,588,359.56
  5. Step 5: Solve for x
    x = 1,099,736,588,359.56/1,209,911.74
  6. Step 6: Final answer
    x = 908,939.51

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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.