Home / 1,120,830.70-1,681,121.47-401,143.34

Finding the Fourth Proportional to 1,120,830.70, 1,681,121.47 and 401,143.34

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Solution

The fourth proportional to 1,120,830.70, 1,681,121.47 and 401,143.34 is: 601,670.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,830.70 : 1,681,121.47 = 401,143.34 : x
  2. Step 2: Convert to fraction form
    1,120,830.70/1,681,121.47 = 401,143.34/x
  3. Step 3: Cross multiply
    1,120,830.70x = 1,681,121.47 × 401,143.34
  4. Step 4: Simplify right side
    1,120,830.70x = 674,370,681,421.51
  5. Step 5: Solve for x
    x = 674,370,681,421.51/1,120,830.70
  6. Step 6: Final answer
    x = 601,670.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.