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Finding the Fourth Proportional to 448,189.47, 671,775.66 and 279,784.98

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Solution

The fourth proportional to 448,189.47, 671,775.66 and 279,784.98 is: 419,360.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,189.47 : 671,775.66 = 279,784.98 : x
  2. Step 2: Convert to fraction form
    448,189.47/671,775.66 = 279,784.98/x
  3. Step 3: Cross multiply
    448,189.47x = 671,775.66 × 279,784.98
  4. Step 4: Simplify right side
    448,189.47x = 187,952,739,597.59
  5. Step 5: Solve for x
    x = 187,952,739,597.59/448,189.47
  6. Step 6: Final answer
    x = 419,360.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.