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Finding the Fourth Proportional to 561,333.42, 774,631.08 and 306,679.14

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Solution

The fourth proportional to 561,333.42, 774,631.08 and 306,679.14 is: 423,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,333.42 : 774,631.08 = 306,679.14 : x
  2. Step 2: Convert to fraction form
    561,333.42/774,631.08 = 306,679.14/x
  3. Step 3: Cross multiply
    561,333.42x = 774,631.08 × 306,679.14
  4. Step 4: Simplify right side
    561,333.42x = 237,563,193,431.67
  5. Step 5: Solve for x
    x = 237,563,193,431.67/561,333.42
  6. Step 6: Final answer
    x = 423,212.27

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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.