Home / 1,230,647.79-1,698,379.20-686,889.66

Finding the Fourth Proportional to 1,230,647.79, 1,698,379.20 and 686,889.66

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Solution

The fourth proportional to 1,230,647.79, 1,698,379.20 and 686,889.66 is: 947,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,647.79 : 1,698,379.20 = 686,889.66 : x
  2. Step 2: Convert to fraction form
    1,230,647.79/1,698,379.20 = 686,889.66/x
  3. Step 3: Cross multiply
    1,230,647.79x = 1,698,379.20 × 686,889.66
  4. Step 4: Simplify right side
    1,230,647.79x = 1,166,599,111,239.07
  5. Step 5: Solve for x
    x = 1,166,599,111,239.07/1,230,647.79
  6. Step 6: Final answer
    x = 947,955.31

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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.