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Finding the Fourth Proportional to 554,643.37, 765,407.90 and 299,994.55

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Solution

The fourth proportional to 554,643.37, 765,407.90 and 299,994.55 is: 413,992.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,643.37 : 765,407.90 = 299,994.55 : x
  2. Step 2: Convert to fraction form
    554,643.37/765,407.90 = 299,994.55/x
  3. Step 3: Cross multiply
    554,643.37x = 765,407.90 × 299,994.55
  4. Step 4: Simplify right side
    554,643.37x = 229,618,198,526.95
  5. Step 5: Solve for x
    x = 229,618,198,526.95/554,643.37
  6. Step 6: Final answer
    x = 413,992.51

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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.