Home / 1,185,779.88-1,636,365.06-641,901.78

Finding the Fourth Proportional to 1,185,779.88, 1,636,365.06 and 641,901.78

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Solution

The fourth proportional to 1,185,779.88, 1,636,365.06 and 641,901.78 is: 885,818.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,779.88 : 1,636,365.06 = 641,901.78 : x
  2. Step 2: Convert to fraction form
    1,185,779.88/1,636,365.06 = 641,901.78/x
  3. Step 3: Cross multiply
    1,185,779.88x = 1,636,365.06 × 641,901.78
  4. Step 4: Simplify right side
    1,185,779.88x = 1,050,385,644,743.81
  5. Step 5: Solve for x
    x = 1,050,385,644,743.81/1,185,779.88
  6. Step 6: Final answer
    x = 885,818.41

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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.