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Finding the Fourth Proportional to 554,642.37, 765,406.52 and 299,993.55

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Solution

The fourth proportional to 554,642.37, 765,406.52 and 299,993.55 is: 413,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,642.37 : 765,406.52 = 299,993.55 : x
  2. Step 2: Convert to fraction form
    554,642.37/765,406.52 = 299,993.55/x
  3. Step 3: Cross multiply
    554,642.37x = 765,406.52 × 299,993.55
  4. Step 4: Simplify right side
    554,642.37x = 229,617,017,627.98
  5. Step 5: Solve for x
    x = 229,617,017,627.98/554,642.37
  6. Step 6: Final answer
    x = 413,991.12

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Double scale
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Similar ratio
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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.