Home / 3,929,975.85-5,423,328.40-2,187,617.61

Finding the Fourth Proportional to 3,929,975.85, 5,423,328.40 and 2,187,617.61

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Solution

The fourth proportional to 3,929,975.85, 5,423,328.40 and 2,187,617.61 is: 3,018,891.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,975.85 : 5,423,328.40 = 2,187,617.61 : x
  2. Step 2: Convert to fraction form
    3,929,975.85/5,423,328.40 = 2,187,617.61/x
  3. Step 3: Cross multiply
    3,929,975.85x = 5,423,328.40 × 2,187,617.61
  4. Step 4: Simplify right side
    3,929,975.85x = 11,864,168,712,653.12
  5. Step 5: Solve for x
    x = 11,864,168,712,653.12/3,929,975.85
  6. Step 6: Final answer
    x = 3,018,891.00

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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.