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Finding the Fourth Proportional to 607,278, 911,472.48 and 307,965.12

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Solution

The fourth proportional to 607,278, 911,472.48 and 307,965.12 is: 462,229.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,278 : 911,472.48 = 307,965.12 : x
  2. Step 2: Convert to fraction form
    607,278/911,472.48 = 307,965.12/x
  3. Step 3: Cross multiply
    607,278x = 911,472.48 × 307,965.12
  4. Step 4: Simplify right side
    607,278x = 280,701,731,679.90
  5. Step 5: Solve for x
    x = 280,701,731,679.90/607,278
  6. Step 6: Final answer
    x = 462,229.38

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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.