Home / 1,319,439.12-1,819,887.13-1,210,894.06

Finding the Fourth Proportional to 1,319,439.12, 1,819,887.13 and 1,210,894.06

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Solution

The fourth proportional to 1,319,439.12, 1,819,887.13 and 1,210,894.06 is: 1,670,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,439.12 : 1,819,887.13 = 1,210,894.06 : x
  2. Step 2: Convert to fraction form
    1,319,439.12/1,819,887.13 = 1,210,894.06/x
  3. Step 3: Cross multiply
    1,319,439.12x = 1,819,887.13 × 1,210,894.06
  4. Step 4: Simplify right side
    1,319,439.12x = 2,203,690,509,532.98
  5. Step 5: Solve for x
    x = 2,203,690,509,532.98/1,319,439.12
  6. Step 6: Final answer
    x = 1,670,172.18

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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.