Home / 3,128,856-4,317,821.28-1,698,072

Finding the Fourth Proportional to 3,128,856, 4,317,821.28 and 1,698,072

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Solution

The fourth proportional to 3,128,856, 4,317,821.28 and 1,698,072 is: 2,343,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,856 : 4,317,821.28 = 1,698,072 : x
  2. Step 2: Convert to fraction form
    3,128,856/4,317,821.28 = 1,698,072/x
  3. Step 3: Cross multiply
    3,128,856x = 4,317,821.28 × 1,698,072
  4. Step 4: Simplify right side
    3,128,856x = 7,331,971,416,572.16
  5. Step 5: Solve for x
    x = 7,331,971,416,572.16/3,128,856
  6. Step 6: Final answer
    x = 2,343,339.36

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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.