Home / 1,521,416.07-2,099,619.81-842,352.57

Finding the Fourth Proportional to 1,521,416.07, 2,099,619.81 and 842,352.57

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Solution

The fourth proportional to 1,521,416.07, 2,099,619.81 and 842,352.57 is: 1,162,482.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,416.07 : 2,099,619.81 = 842,352.57 : x
  2. Step 2: Convert to fraction form
    1,521,416.07/2,099,619.81 = 842,352.57/x
  3. Step 3: Cross multiply
    1,521,416.07x = 2,099,619.81 × 842,352.57
  4. Step 4: Simplify right side
    1,521,416.07x = 1,768,620,142,976.41
  5. Step 5: Solve for x
    x = 1,768,620,142,976.41/1,521,416.07
  6. Step 6: Final answer
    x = 1,162,482.89

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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.