Home / 3,138,368.28-4,330,820.70-1,780,212.12

Finding the Fourth Proportional to 3,138,368.28, 4,330,820.70 and 1,780,212.12

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Solution

The fourth proportional to 3,138,368.28, 4,330,820.70 and 1,780,212.12 is: 2,456,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138,368.28 : 4,330,820.70 = 1,780,212.12 : x
  2. Step 2: Convert to fraction form
    3,138,368.28/4,330,820.70 = 1,780,212.12/x
  3. Step 3: Cross multiply
    3,138,368.28x = 4,330,820.70 × 1,780,212.12
  4. Step 4: Simplify right side
    3,138,368.28x = 7,709,779,499,686.89
  5. Step 5: Solve for x
    x = 7,709,779,499,686.89/3,138,368.28
  6. Step 6: Final answer
    x = 2,456,620.39

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1.5x scale

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.