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Finding the Fourth Proportional to 612,477.10, 918,059.55 and 275,460.40

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Solution

The fourth proportional to 612,477.10, 918,059.55 and 275,460.40 is: 412,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,477.10 : 918,059.55 = 275,460.40 : x
  2. Step 2: Convert to fraction form
    612,477.10/918,059.55 = 275,460.40/x
  3. Step 3: Cross multiply
    612,477.10x = 918,059.55 × 275,460.40
  4. Step 4: Simplify right side
    612,477.10x = 252,889,050,866.82
  5. Step 5: Solve for x
    x = 252,889,050,866.82/612,477.10
  6. Step 6: Final answer
    x = 412,895.52

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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.