Home / 6,899,009.78-9,521,136.69-3,999,149.30

Finding the Fourth Proportional to 6,899,009.78, 9,521,136.69 and 3,999,149.30

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Solution

The fourth proportional to 6,899,009.78, 9,521,136.69 and 3,999,149.30 is: 5,519,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899,009.78 : 9,521,136.69 = 3,999,149.30 : x
  2. Step 2: Convert to fraction form
    6,899,009.78/9,521,136.69 = 3,999,149.30/x
  3. Step 3: Cross multiply
    6,899,009.78x = 9,521,136.69 × 3,999,149.30
  4. Step 4: Simplify right side
    6,899,009.78x = 38,076,447,129,017.81
  5. Step 5: Solve for x
    x = 38,076,447,129,017.81/6,899,009.78
  6. Step 6: Final answer
    x = 5,519,117.72

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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.