Home / 712,235.36-982,884.32-389,945.37

Finding the Fourth Proportional to 712,235.36, 982,884.32 and 389,945.37

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Solution

The fourth proportional to 712,235.36, 982,884.32 and 389,945.37 is: 538,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,235.36 : 982,884.32 = 389,945.37 : x
  2. Step 2: Convert to fraction form
    712,235.36/982,884.32 = 389,945.37/x
  3. Step 3: Cross multiply
    712,235.36x = 982,884.32 × 389,945.37
  4. Step 4: Simplify right side
    712,235.36x = 383,271,190,804.46
  5. Step 5: Solve for x
    x = 383,271,190,804.46/712,235.36
  6. Step 6: Final answer
    x = 538,124.35

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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.