Home / 1,185,678.32-1,636,237.06-641,812.43

Finding the Fourth Proportional to 1,185,678.32, 1,636,237.06 and 641,812.43

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Solution

The fourth proportional to 1,185,678.32, 1,636,237.06 and 641,812.43 is: 885,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,678.32 : 1,636,237.06 = 641,812.43 : x
  2. Step 2: Convert to fraction form
    1,185,678.32/1,636,237.06 = 641,812.43/x
  3. Step 3: Cross multiply
    1,185,678.32x = 1,636,237.06 × 641,812.43
  4. Step 4: Simplify right side
    1,185,678.32x = 1,050,157,286,020.72
  5. Step 5: Solve for x
    x = 1,050,157,286,020.72/1,185,678.32
  6. Step 6: Final answer
    x = 885,701.69

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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.