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Finding the Fourth Proportional to 673,804.72, 929,744.82 and 387,271.36

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Solution

The fourth proportional to 673,804.72, 929,744.82 and 387,271.36 is: 534,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,804.72 : 929,744.82 = 387,271.36 : x
  2. Step 2: Convert to fraction form
    673,804.72/929,744.82 = 387,271.36/x
  3. Step 3: Cross multiply
    673,804.72x = 929,744.82 × 387,271.36
  4. Step 4: Simplify right side
    673,804.72x = 360,063,540,894.36
  5. Step 5: Solve for x
    x = 360,063,540,894.36/673,804.72
  6. Step 6: Final answer
    x = 534,373.73

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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.