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Finding the Fourth Proportional to 612,316.26, 918,157.96 and 275,068.56

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Solution

The fourth proportional to 612,316.26, 918,157.96 and 275,068.56 is: 412,460.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,316.26 : 918,157.96 = 275,068.56 : x
  2. Step 2: Convert to fraction form
    612,316.26/918,157.96 = 275,068.56/x
  3. Step 3: Cross multiply
    612,316.26x = 918,157.96 × 275,068.56
  4. Step 4: Simplify right side
    612,316.26x = 252,556,381,943.61
  5. Step 5: Solve for x
    x = 252,556,381,943.61/612,316.26
  6. Step 6: Final answer
    x = 412,460.68

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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.