Home / 2,154,156.81-2,972,721.51-1,187,287.62

Finding the Fourth Proportional to 2,154,156.81, 2,972,721.51 and 1,187,287.62

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Solution

The fourth proportional to 2,154,156.81, 2,972,721.51 and 1,187,287.62 is: 1,638,448.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,156.81 : 2,972,721.51 = 1,187,287.62 : x
  2. Step 2: Convert to fraction form
    2,154,156.81/2,972,721.51 = 1,187,287.62/x
  3. Step 3: Cross multiply
    2,154,156.81x = 2,972,721.51 × 1,187,287.62
  4. Step 4: Simplify right side
    2,154,156.81x = 3,529,475,446,530.71
  5. Step 5: Solve for x
    x = 3,529,475,446,530.71/2,154,156.81
  6. Step 6: Final answer
    x = 1,638,448.71

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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.