Home / 873,428.75-1,205,804.78-612,585.11

Finding the Fourth Proportional to 873,428.75, 1,205,804.78 and 612,585.11

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Solution

The fourth proportional to 873,428.75, 1,205,804.78 and 612,585.11 is: 845,699.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,428.75 : 1,205,804.78 = 612,585.11 : x
  2. Step 2: Convert to fraction form
    873,428.75/1,205,804.78 = 612,585.11/x
  3. Step 3: Cross multiply
    873,428.75x = 1,205,804.78 × 612,585.11
  4. Step 4: Simplify right side
    873,428.75x = 738,658,044,702.88
  5. Step 5: Solve for x
    x = 738,658,044,702.88/873,428.75
  6. Step 6: Final answer
    x = 845,699.26

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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.