Home / 1,991,860.64-2,748,980.57-1,217,945.06

Finding the Fourth Proportional to 1,991,860.64, 2,748,980.57 and 1,217,945.06

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Solution

The fourth proportional to 1,991,860.64, 2,748,980.57 and 1,217,945.06 is: 1,680,894.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,860.64 : 2,748,980.57 = 1,217,945.06 : x
  2. Step 2: Convert to fraction form
    1,991,860.64/2,748,980.57 = 1,217,945.06/x
  3. Step 3: Cross multiply
    1,991,860.64x = 2,748,980.57 × 1,217,945.06
  4. Step 4: Simplify right side
    1,991,860.64x = 3,348,107,285,432.86
  5. Step 5: Solve for x
    x = 3,348,107,285,432.86/1,991,860.64
  6. Step 6: Final answer
    x = 1,680,894.35

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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.