Home / 1,319,905.64-1,820,528.66-1,211,359.72

Finding the Fourth Proportional to 1,319,905.64, 1,820,528.66 and 1,211,359.72

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Solution

The fourth proportional to 1,319,905.64, 1,820,528.66 and 1,211,359.72 is: 1,670,812.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,905.64 : 1,820,528.66 = 1,211,359.72 : x
  2. Step 2: Convert to fraction form
    1,319,905.64/1,820,528.66 = 1,211,359.72/x
  3. Step 3: Cross multiply
    1,319,905.64x = 1,820,528.66 × 1,211,359.72
  4. Step 4: Simplify right side
    1,319,905.64x = 2,205,315,087,829.58
  5. Step 5: Solve for x
    x = 2,205,315,087,829.58/1,319,905.64
  6. Step 6: Final answer
    x = 1,670,812.69

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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.