Home / 7,085,889.63-9,778,848.16-3,989,476.95

Finding the Fourth Proportional to 7,085,889.63, 9,778,848.16 and 3,989,476.95

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Solution

The fourth proportional to 7,085,889.63, 9,778,848.16 and 3,989,476.95 is: 5,505,658.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085,889.63 : 9,778,848.16 = 3,989,476.95 : x
  2. Step 2: Convert to fraction form
    7,085,889.63/9,778,848.16 = 3,989,476.95/x
  3. Step 3: Cross multiply
    7,085,889.63x = 9,778,848.16 × 3,989,476.95
  4. Step 4: Simplify right side
    7,085,889.63x = 39,012,489,282,975.67
  5. Step 5: Solve for x
    x = 39,012,489,282,975.67/7,085,889.63
  6. Step 6: Final answer
    x = 5,505,658.61

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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.