Home / 1,185,911.70-1,636,557.15-642,052.18

Finding the Fourth Proportional to 1,185,911.70, 1,636,557.15 and 642,052.18

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Solution

The fourth proportional to 1,185,911.70, 1,636,557.15 and 642,052.18 is: 886,031.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,911.70 : 1,636,557.15 = 642,052.18 : x
  2. Step 2: Convert to fraction form
    1,185,911.70/1,636,557.15 = 642,052.18/x
  3. Step 3: Cross multiply
    1,185,911.70x = 1,636,557.15 × 642,052.18
  4. Step 4: Simplify right side
    1,185,911.70x = 1,050,755,085,852.09
  5. Step 5: Solve for x
    x = 1,050,755,085,852.09/1,185,911.70
  6. Step 6: Final answer
    x = 886,031.47

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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.