Home / 2,166,913.89-2,989,349.01-1,403,213.49

Finding the Fourth Proportional to 2,166,913.89, 2,989,349.01 and 1,403,213.49

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Solution

The fourth proportional to 2,166,913.89, 2,989,349.01 and 1,403,213.49 is: 1,935,792.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166,913.89 : 2,989,349.01 = 1,403,213.49 : x
  2. Step 2: Convert to fraction form
    2,166,913.89/2,989,349.01 = 1,403,213.49/x
  3. Step 3: Cross multiply
    2,166,913.89x = 2,989,349.01 × 1,403,213.49
  4. Step 4: Simplify right side
    2,166,913.89x = 4,194,694,857,150.14
  5. Step 5: Solve for x
    x = 4,194,694,857,150.14/2,166,913.89
  6. Step 6: Final answer
    x = 1,935,792.13

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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.