Home / 1,243,283.34-1,715,989.95-812,765.10

Finding the Fourth Proportional to 1,243,283.34, 1,715,989.95 and 812,765.10

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Solution

The fourth proportional to 1,243,283.34, 1,715,989.95 and 812,765.10 is: 1,121,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,283.34 : 1,715,989.95 = 812,765.10 : x
  2. Step 2: Convert to fraction form
    1,243,283.34/1,715,989.95 = 812,765.10/x
  3. Step 3: Cross multiply
    1,243,283.34x = 1,715,989.95 × 812,765.10
  4. Step 4: Simplify right side
    1,243,283.34x = 1,394,696,743,310.74
  5. Step 5: Solve for x
    x = 1,394,696,743,310.74/1,243,283.34
  6. Step 6: Final answer
    x = 1,121,785.11

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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.