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Finding the Fourth Proportional to 538,421.12, 743,019.56 and 296,703.60

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Solution

The fourth proportional to 538,421.12, 743,019.56 and 296,703.60 is: 409,450.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,421.12 : 743,019.56 = 296,703.60 : x
  2. Step 2: Convert to fraction form
    538,421.12/743,019.56 = 296,703.60/x
  3. Step 3: Cross multiply
    538,421.12x = 743,019.56 × 296,703.60
  4. Step 4: Simplify right side
    538,421.12x = 220,456,578,322.42
  5. Step 5: Solve for x
    x = 220,456,578,322.42/538,421.12
  6. Step 6: Final answer
    x = 409,450.09

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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.