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Finding the Fourth Proportional to 673,793.75, 929,729.67 and 387,260.30

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Solution

The fourth proportional to 673,793.75, 929,729.67 and 387,260.30 is: 534,358.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,793.75 : 929,729.67 = 387,260.30 : x
  2. Step 2: Convert to fraction form
    673,793.75/929,729.67 = 387,260.30/x
  3. Step 3: Cross multiply
    673,793.75x = 929,729.67 × 387,260.30
  4. Step 4: Simplify right side
    673,793.75x = 360,047,390,923.10
  5. Step 5: Solve for x
    x = 360,047,390,923.10/673,793.75
  6. Step 6: Final answer
    x = 534,358.46

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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.