Home / 1,185,782.60-1,636,378.26-641,915.72

Finding the Fourth Proportional to 1,185,782.60, 1,636,378.26 and 641,915.72

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Solution

The fourth proportional to 1,185,782.60, 1,636,378.26 and 641,915.72 is: 885,842.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,782.60 : 1,636,378.26 = 641,915.72 : x
  2. Step 2: Convert to fraction form
    1,185,782.60/1,636,378.26 = 641,915.72/x
  3. Step 3: Cross multiply
    1,185,782.60x = 1,636,378.26 × 641,915.72
  4. Step 4: Simplify right side
    1,185,782.60x = 1,050,416,928,960.25
  5. Step 5: Solve for x
    x = 1,050,416,928,960.25/1,185,782.60
  6. Step 6: Final answer
    x = 885,842.76

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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.