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Finding the Fourth Proportional to 673,796.25, 929,733.12 and 387,262.80

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Solution

The fourth proportional to 673,796.25, 929,733.12 and 387,262.80 is: 534,361.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,796.25 : 929,733.12 = 387,262.80 : x
  2. Step 2: Convert to fraction form
    673,796.25/929,733.12 = 387,262.80/x
  3. Step 3: Cross multiply
    673,796.25x = 929,733.12 × 387,262.80
  4. Step 4: Simplify right side
    673,796.25x = 360,051,051,303.94
  5. Step 5: Solve for x
    x = 360,051,051,303.94/673,796.25
  6. Step 6: Final answer
    x = 534,361.91

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Double scale
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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.