Home / 3,120,690.90-4,681,036.35-1,918,715.70

Finding the Fourth Proportional to 3,120,690.90, 4,681,036.35 and 1,918,715.70

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Solution

The fourth proportional to 3,120,690.90, 4,681,036.35 and 1,918,715.70 is: 2,878,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,690.90 : 4,681,036.35 = 1,918,715.70 : x
  2. Step 2: Convert to fraction form
    3,120,690.90/4,681,036.35 = 1,918,715.70/x
  3. Step 3: Cross multiply
    3,120,690.90x = 4,681,036.35 × 1,918,715.70
  4. Step 4: Simplify right side
    3,120,690.90x = 8,981,577,937,015.69
  5. Step 5: Solve for x
    x = 8,981,577,937,015.69/3,120,690.90
  6. Step 6: Final answer
    x = 2,878,073.55

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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.