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Finding the Fourth Proportional to 673,784.84, 929,717.16 and 387,249.60

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Solution

The fourth proportional to 673,784.84, 929,717.16 and 387,249.60 is: 534,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,784.84 : 929,717.16 = 387,249.60 : x
  2. Step 2: Convert to fraction form
    673,784.84/929,717.16 = 387,249.60/x
  3. Step 3: Cross multiply
    673,784.84x = 929,717.16 × 387,249.60
  4. Step 4: Simplify right side
    673,784.84x = 360,032,598,323.14
  5. Step 5: Solve for x
    x = 360,032,598,323.14/673,784.84
  6. Step 6: Final answer
    x = 534,343.57

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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.