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Finding the Fourth Proportional to 554,452.80, 765,133.20 and 328,171.20

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Solution

The fourth proportional to 554,452.80, 765,133.20 and 328,171.20 is: 452,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,452.80 : 765,133.20 = 328,171.20 : x
  2. Step 2: Convert to fraction form
    554,452.80/765,133.20 = 328,171.20/x
  3. Step 3: Cross multiply
    554,452.80x = 765,133.20 × 328,171.20
  4. Step 4: Simplify right side
    554,452.80x = 251,094,680,403.84
  5. Step 5: Solve for x
    x = 251,094,680,403.84/554,452.80
  6. Step 6: Final answer
    x = 452,869.35

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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.