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Finding the Fourth Proportional to 889,538.40, 1,334,480.40 and 384,098.40

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Solution

The fourth proportional to 889,538.40, 1,334,480.40 and 384,098.40 is: 576,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,538.40 : 1,334,480.40 = 384,098.40 : x
  2. Step 2: Convert to fraction form
    889,538.40/1,334,480.40 = 384,098.40/x
  3. Step 3: Cross multiply
    889,538.40x = 1,334,480.40 × 384,098.40
  4. Step 4: Simplify right side
    889,538.40x = 512,571,786,471.36
  5. Step 5: Solve for x
    x = 512,571,786,471.36/889,538.40
  6. Step 6: Final answer
    x = 576,222.21

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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.