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Finding the Fourth Proportional to 673,749.82, 929,718.90 and 383,284.12

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Solution

The fourth proportional to 673,749.82, 929,718.90 and 383,284.12 is: 528,900.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,749.82 : 929,718.90 = 383,284.12 : x
  2. Step 2: Convert to fraction form
    673,749.82/929,718.90 = 383,284.12/x
  3. Step 3: Cross multiply
    673,749.82x = 929,718.90 × 383,284.12
  4. Step 4: Simplify right side
    673,749.82x = 356,346,490,433.87
  5. Step 5: Solve for x
    x = 356,346,490,433.87/673,749.82
  6. Step 6: Final answer
    x = 528,900.31

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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.