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Finding the Fourth Proportional to 651,900, 899,673.84 and 383,679.84

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Solution

The fourth proportional to 651,900, 899,673.84 and 383,679.84 is: 529,508.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,900 : 899,673.84 = 383,679.84 : x
  2. Step 2: Convert to fraction form
    651,900/899,673.84 = 383,679.84/x
  3. Step 3: Cross multiply
    651,900x = 899,673.84 × 383,679.84
  4. Step 4: Simplify right side
    651,900x = 345,186,714,983.39
  5. Step 5: Solve for x
    x = 345,186,714,983.39/651,900
  6. Step 6: Final answer
    x = 529,508.69

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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.