Home / 2,812,206.51-4,218,528.50-919,139.31

Finding the Fourth Proportional to 2,812,206.51, 4,218,528.50 and 919,139.31

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Solution

The fourth proportional to 2,812,206.51, 4,218,528.50 and 919,139.31 is: 1,378,780.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812,206.51 : 4,218,528.50 = 919,139.31 : x
  2. Step 2: Convert to fraction form
    2,812,206.51/4,218,528.50 = 919,139.31/x
  3. Step 3: Cross multiply
    2,812,206.51x = 4,218,528.50 × 919,139.31
  4. Step 4: Simplify right side
    2,812,206.51x = 3,877,415,370,109.64
  5. Step 5: Solve for x
    x = 3,877,415,370,109.64/2,812,206.51
  6. Step 6: Final answer
    x = 1,378,780.45

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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.