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Finding the Fourth Proportional to 612,316.36, 918,158.11 and 275,068.66

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Solution

The fourth proportional to 612,316.36, 918,158.11 and 275,068.66 is: 412,460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,316.36 : 918,158.11 = 275,068.66 : x
  2. Step 2: Convert to fraction form
    612,316.36/918,158.11 = 275,068.66/x
  3. Step 3: Cross multiply
    612,316.36x = 918,158.11 × 275,068.66
  4. Step 4: Simplify right side
    612,316.36x = 252,556,520,985.83
  5. Step 5: Solve for x
    x = 252,556,520,985.83/612,316.36
  6. Step 6: Final answer
    x = 412,460.84

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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.