Home / 819,111.24-1,229,220.48-286,636.98

Finding the Fourth Proportional to 819,111.24, 1,229,220.48 and 286,636.98

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Solution

The fourth proportional to 819,111.24, 1,229,220.48 and 286,636.98 is: 430,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,111.24 : 1,229,220.48 = 286,636.98 : x
  2. Step 2: Convert to fraction form
    819,111.24/1,229,220.48 = 286,636.98/x
  3. Step 3: Cross multiply
    819,111.24x = 1,229,220.48 × 286,636.98
  4. Step 4: Simplify right side
    819,111.24x = 352,340,046,141.35
  5. Step 5: Solve for x
    x = 352,340,046,141.35/819,111.24
  6. Step 6: Final answer
    x = 430,149.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.