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Finding the Fourth Proportional to 884,019.80, 1,325,448.84 and 428,490.50

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Solution

The fourth proportional to 884,019.80, 1,325,448.84 and 428,490.50 is: 642,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,019.80 : 1,325,448.84 = 428,490.50 : x
  2. Step 2: Convert to fraction form
    884,019.80/1,325,448.84 = 428,490.50/x
  3. Step 3: Cross multiply
    884,019.80x = 1,325,448.84 × 428,490.50
  4. Step 4: Simplify right side
    884,019.80x = 567,942,236,176.02
  5. Step 5: Solve for x
    x = 567,942,236,176.02/884,019.80
  6. Step 6: Final answer
    x = 642,454.20

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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.