Home / 812,699.47-1,122,279.15-608,395.70

Finding the Fourth Proportional to 812,699.47, 1,122,279.15 and 608,395.70

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Solution

The fourth proportional to 812,699.47, 1,122,279.15 and 608,395.70 is: 840,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,699.47 : 1,122,279.15 = 608,395.70 : x
  2. Step 2: Convert to fraction form
    812,699.47/1,122,279.15 = 608,395.70/x
  3. Step 3: Cross multiply
    812,699.47x = 1,122,279.15 × 608,395.70
  4. Step 4: Simplify right side
    812,699.47x = 682,789,809,059.66
  5. Step 5: Solve for x
    x = 682,789,809,059.66/812,699.47
  6. Step 6: Final answer
    x = 840,150.43

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Double scale
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1.5x scale

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.