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Finding the Fourth Proportional to 673,617.60, 929,600 and 371,811.84

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Solution

The fourth proportional to 673,617.60, 929,600 and 371,811.84 is: 513,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,617.60 : 929,600 = 371,811.84 : x
  2. Step 2: Convert to fraction form
    673,617.60/929,600 = 371,811.84/x
  3. Step 3: Cross multiply
    673,617.60x = 929,600 × 371,811.84
  4. Step 4: Simplify right side
    673,617.60x = 345,636,286,464
  5. Step 5: Solve for x
    x = 345,636,286,464/673,617.60
  6. Step 6: Final answer
    x = 513,104.60

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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.