Home / 5,055,120.69-6,974,363.21-2,878,123.51

Finding the Fourth Proportional to 5,055,120.69, 6,974,363.21 and 2,878,123.51

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Solution

The fourth proportional to 5,055,120.69, 6,974,363.21 and 2,878,123.51 is: 3,970,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,055,120.69 : 6,974,363.21 = 2,878,123.51 : x
  2. Step 2: Convert to fraction form
    5,055,120.69/6,974,363.21 = 2,878,123.51/x
  3. Step 3: Cross multiply
    5,055,120.69x = 6,974,363.21 × 2,878,123.51
  4. Step 4: Simplify right side
    5,055,120.69x = 20,073,078,721,980.07
  5. Step 5: Solve for x
    x = 20,073,078,721,980.07/5,055,120.69
  6. Step 6: Final answer
    x = 3,970,840.65

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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.