Home / 1,099,810.36-1,517,836.08-640,900

Finding the Fourth Proportional to 1,099,810.36, 1,517,836.08 and 640,900

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Solution

The fourth proportional to 1,099,810.36, 1,517,836.08 and 640,900 is: 884,498.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,810.36 : 1,517,836.08 = 640,900 : x
  2. Step 2: Convert to fraction form
    1,099,810.36/1,517,836.08 = 640,900/x
  3. Step 3: Cross multiply
    1,099,810.36x = 1,517,836.08 × 640,900
  4. Step 4: Simplify right side
    1,099,810.36x = 972,781,143,672
  5. Step 5: Solve for x
    x = 972,781,143,672/1,099,810.36
  6. Step 6: Final answer
    x = 884,498.98

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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.