Home / 612,427.20-918,669.60-191,716.80

Finding the Fourth Proportional to 612,427.20, 918,669.60 and 191,716.80

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Solution

The fourth proportional to 612,427.20, 918,669.60 and 191,716.80 is: 287,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,427.20 : 918,669.60 = 191,716.80 : x
  2. Step 2: Convert to fraction form
    612,427.20/918,669.60 = 191,716.80/x
  3. Step 3: Cross multiply
    612,427.20x = 918,669.60 × 191,716.80
  4. Step 4: Simplify right side
    612,427.20x = 176,124,395,969.28
  5. Step 5: Solve for x
    x = 176,124,395,969.28/612,427.20
  6. Step 6: Final answer
    x = 287,584.22

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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.