Home / 7,142,685.71-9,856,977.89-3,879,564.26

Finding the Fourth Proportional to 7,142,685.71, 9,856,977.89 and 3,879,564.26

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Solution

The fourth proportional to 7,142,685.71, 9,856,977.89 and 3,879,564.26 is: 5,353,837.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142,685.71 : 9,856,977.89 = 3,879,564.26 : x
  2. Step 2: Convert to fraction form
    7,142,685.71/9,856,977.89 = 3,879,564.26/x
  3. Step 3: Cross multiply
    7,142,685.71x = 9,856,977.89 × 3,879,564.26
  4. Step 4: Simplify right side
    7,142,685.71x = 38,240,779,064,971.50
  5. Step 5: Solve for x
    x = 38,240,779,064,971.50/7,142,685.71
  6. Step 6: Final answer
    x = 5,353,837.57

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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.