Home / 1,385,880.66-2,078,826.10-426,329.61

Finding the Fourth Proportional to 1,385,880.66, 2,078,826.10 and 426,329.61

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Solution

The fourth proportional to 1,385,880.66, 2,078,826.10 and 426,329.61 is: 639,495.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,880.66 : 2,078,826.10 = 426,329.61 : x
  2. Step 2: Convert to fraction form
    1,385,880.66/2,078,826.10 = 426,329.61/x
  3. Step 3: Cross multiply
    1,385,880.66x = 2,078,826.10 × 426,329.61
  4. Step 4: Simplify right side
    1,385,880.66x = 886,265,120,470.82
  5. Step 5: Solve for x
    x = 886,265,120,470.82/1,385,880.66
  6. Step 6: Final answer
    x = 639,495.99

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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.