Home / 3,125,856.78-4,685,569.35-1,421,185.86

Finding the Fourth Proportional to 3,125,856.78, 4,685,569.35 and 1,421,185.86

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Solution

The fourth proportional to 3,125,856.78, 4,685,569.35 and 1,421,185.86 is: 2,130,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125,856.78 : 4,685,569.35 = 1,421,185.86 : x
  2. Step 2: Convert to fraction form
    3,125,856.78/4,685,569.35 = 1,421,185.86/x
  3. Step 3: Cross multiply
    3,125,856.78x = 4,685,569.35 × 1,421,185.86
  4. Step 4: Simplify right side
    3,125,856.78x = 6,659,064,906,269.39
  5. Step 5: Solve for x
    x = 6,659,064,906,269.39/3,125,856.78
  6. Step 6: Final answer
    x = 2,130,316.70

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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.