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Finding the Fourth Proportional to 613,548.95, 920,365.43 and 208,576.34

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Solution

The fourth proportional to 613,548.95, 920,365.43 and 208,576.34 is: 312,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,548.95 : 920,365.43 = 208,576.34 : x
  2. Step 2: Convert to fraction form
    613,548.95/920,365.43 = 208,576.34/x
  3. Step 3: Cross multiply
    613,548.95x = 920,365.43 × 208,576.34
  4. Step 4: Simplify right side
    613,548.95x = 191,966,447,207.22
  5. Step 5: Solve for x
    x = 191,966,447,207.22/613,548.95
  6. Step 6: Final answer
    x = 312,878.78

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1.5x scale

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.