Home / 1,185,775.31-1,636,368.09-641,910.96

Finding the Fourth Proportional to 1,185,775.31, 1,636,368.09 and 641,910.96

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Solution

The fourth proportional to 1,185,775.31, 1,636,368.09 and 641,910.96 is: 885,836.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,775.31 : 1,636,368.09 = 641,910.96 : x
  2. Step 2: Convert to fraction form
    1,185,775.31/1,636,368.09 = 641,910.96/x
  3. Step 3: Cross multiply
    1,185,775.31x = 1,636,368.09 × 641,910.96
  4. Step 4: Simplify right side
    1,185,775.31x = 1,050,402,611,565.27
  5. Step 5: Solve for x
    x = 1,050,402,611,565.27/1,185,775.31
  6. Step 6: Final answer
    x = 885,836.13

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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.