Home / 1,384,546.86-1,910,699.55-811,999.98

Finding the Fourth Proportional to 1,384,546.86, 1,910,699.55 and 811,999.98

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Solution

The fourth proportional to 1,384,546.86, 1,910,699.55 and 811,999.98 is: 1,120,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,546.86 : 1,910,699.55 = 811,999.98 : x
  2. Step 2: Convert to fraction form
    1,384,546.86/1,910,699.55 = 811,999.98/x
  3. Step 3: Cross multiply
    1,384,546.86x = 1,910,699.55 × 811,999.98
  4. Step 4: Simplify right side
    1,384,546.86x = 1,551,487,996,386.01
  5. Step 5: Solve for x
    x = 1,551,487,996,386.01/1,384,546.86
  6. Step 6: Final answer
    x = 1,120,574.57

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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.