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Finding the Fourth Proportional to 612,029.40, 917,412.30 and 275,231.40

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Solution

The fourth proportional to 612,029.40, 917,412.30 and 275,231.40 is: 412,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,029.40 : 917,412.30 = 275,231.40 : x
  2. Step 2: Convert to fraction form
    612,029.40/917,412.30 = 275,231.40/x
  3. Step 3: Cross multiply
    612,029.40x = 917,412.30 × 275,231.40
  4. Step 4: Simplify right side
    612,029.40x = 252,500,671,706.22
  5. Step 5: Solve for x
    x = 252,500,671,706.22/612,029.40
  6. Step 6: Final answer
    x = 412,562.98

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1.5x scale

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.