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Finding the Fourth Proportional to 664,076.84, 916,421.81 and 377,596.91

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Solution

The fourth proportional to 664,076.84, 916,421.81 and 377,596.91 is: 521,081.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,076.84 : 916,421.81 = 377,596.91 : x
  2. Step 2: Convert to fraction form
    664,076.84/916,421.81 = 377,596.91/x
  3. Step 3: Cross multiply
    664,076.84x = 916,421.81 × 377,596.91
  4. Step 4: Simplify right side
    664,076.84x = 346,038,044,115.68
  5. Step 5: Solve for x
    x = 346,038,044,115.68/664,076.84
  6. Step 6: Final answer
    x = 521,081.34

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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.