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Finding the Fourth Proportional to 554,653.16, 765,420.79 and 300,003.74

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Solution

The fourth proportional to 554,653.16, 765,420.79 and 300,003.74 is: 414,004.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,653.16 : 765,420.79 = 300,003.74 : x
  2. Step 2: Convert to fraction form
    554,653.16/765,420.79 = 300,003.74/x
  3. Step 3: Cross multiply
    554,653.16x = 765,420.79 × 300,003.74
  4. Step 4: Simplify right side
    554,653.16x = 229,629,099,673.76
  5. Step 5: Solve for x
    x = 229,629,099,673.76/554,653.16
  6. Step 6: Final answer
    x = 414,004.85

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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.