Home / 1,585,065.84-2,188,239.48-1,221,693.36

Finding the Fourth Proportional to 1,585,065.84, 2,188,239.48 and 1,221,693.36

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Solution

The fourth proportional to 1,585,065.84, 2,188,239.48 and 1,221,693.36 is: 1,686,590.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585,065.84 : 2,188,239.48 = 1,221,693.36 : x
  2. Step 2: Convert to fraction form
    1,585,065.84/2,188,239.48 = 1,221,693.36/x
  3. Step 3: Cross multiply
    1,585,065.84x = 2,188,239.48 × 1,221,693.36
  4. Step 4: Simplify right side
    1,585,065.84x = 2,673,357,642,805.85
  5. Step 5: Solve for x
    x = 2,673,357,642,805.85/1,585,065.84
  6. Step 6: Final answer
    x = 1,686,590.91

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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.