Home / 1,216,855.41-1,679,192.55-665,462.31

Finding the Fourth Proportional to 1,216,855.41, 1,679,192.55 and 665,462.31

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Solution

The fourth proportional to 1,216,855.41, 1,679,192.55 and 665,462.31 is: 918,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,855.41 : 1,679,192.55 = 665,462.31 : x
  2. Step 2: Convert to fraction form
    1,216,855.41/1,679,192.55 = 665,462.31/x
  3. Step 3: Cross multiply
    1,216,855.41x = 1,679,192.55 × 665,462.31
  4. Step 4: Simplify right side
    1,216,855.41x = 1,117,439,353,257.79
  5. Step 5: Solve for x
    x = 1,117,439,353,257.79/1,216,855.41
  6. Step 6: Final answer
    x = 918,300.85

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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.