Home / 987,049.20-1,362,128.40-534,340.20

Finding the Fourth Proportional to 987,049.20, 1,362,128.40 and 534,340.20

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Solution

The fourth proportional to 987,049.20, 1,362,128.40 and 534,340.20 is: 737,389.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,049.20 : 1,362,128.40 = 534,340.20 : x
  2. Step 2: Convert to fraction form
    987,049.20/1,362,128.40 = 534,340.20/x
  3. Step 3: Cross multiply
    987,049.20x = 1,362,128.40 × 534,340.20
  4. Step 4: Simplify right side
    987,049.20x = 727,839,961,681.68
  5. Step 5: Solve for x
    x = 727,839,961,681.68/987,049.20
  6. Step 6: Final answer
    x = 737,389.75

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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.