Home / 1,128,156.54-1,692,240.57-380,209.02

Finding the Fourth Proportional to 1,128,156.54, 1,692,240.57 and 380,209.02

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Solution

The fourth proportional to 1,128,156.54, 1,692,240.57 and 380,209.02 is: 570,315.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,156.54 : 1,692,240.57 = 380,209.02 : x
  2. Step 2: Convert to fraction form
    1,128,156.54/1,692,240.57 = 380,209.02/x
  3. Step 3: Cross multiply
    1,128,156.54x = 1,692,240.57 × 380,209.02
  4. Step 4: Simplify right side
    1,128,156.54x = 643,405,128,723.94
  5. Step 5: Solve for x
    x = 643,405,128,723.94/1,128,156.54
  6. Step 6: Final answer
    x = 570,315.47

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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.