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Finding the Fourth Proportional to 673,744.40, 1,011,005.40 and 253,062.80

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Solution

The fourth proportional to 673,744.40, 1,011,005.40 and 253,062.80 is: 379,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,744.40 : 1,011,005.40 = 253,062.80 : x
  2. Step 2: Convert to fraction form
    673,744.40/1,011,005.40 = 253,062.80/x
  3. Step 3: Cross multiply
    673,744.40x = 1,011,005.40 × 253,062.80
  4. Step 4: Simplify right side
    673,744.40x = 255,847,857,339.12
  5. Step 5: Solve for x
    x = 255,847,857,339.12/673,744.40
  6. Step 6: Final answer
    x = 379,740.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.