Home / 3,278,130.72-4,916,015.10-1,385,019.78

Finding the Fourth Proportional to 3,278,130.72, 4,916,015.10 and 1,385,019.78

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Solution

The fourth proportional to 3,278,130.72, 4,916,015.10 and 1,385,019.78 is: 2,077,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278,130.72 : 4,916,015.10 = 1,385,019.78 : x
  2. Step 2: Convert to fraction form
    3,278,130.72/4,916,015.10 = 1,385,019.78/x
  3. Step 3: Cross multiply
    3,278,130.72x = 4,916,015.10 × 1,385,019.78
  4. Step 4: Simplify right side
    3,278,130.72x = 6,808,778,152,278.68
  5. Step 5: Solve for x
    x = 6,808,778,152,278.68/3,278,130.72
  6. Step 6: Final answer
    x = 2,077,030.70

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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.