Home / 3,178,343.76-4,386,200.40-1,728,136.56

Finding the Fourth Proportional to 3,178,343.76, 4,386,200.40 and 1,728,136.56

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Solution

The fourth proportional to 3,178,343.76, 4,386,200.40 and 1,728,136.56 is: 2,384,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,343.76 : 4,386,200.40 = 1,728,136.56 : x
  2. Step 2: Convert to fraction form
    3,178,343.76/4,386,200.40 = 1,728,136.56/x
  3. Step 3: Cross multiply
    3,178,343.76x = 4,386,200.40 × 1,728,136.56
  4. Step 4: Simplify right side
    3,178,343.76x = 7,579,953,270,726.63
  5. Step 5: Solve for x
    x = 7,579,953,270,726.63/3,178,343.76
  6. Step 6: Final answer
    x = 2,384,875.22

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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.