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Finding the Fourth Proportional to 612,041.20, 917,624.40 and 274,805.80

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Solution

The fourth proportional to 612,041.20, 917,624.40 and 274,805.80 is: 412,012.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,041.20 : 917,624.40 = 274,805.80 : x
  2. Step 2: Convert to fraction form
    612,041.20/917,624.40 = 274,805.80/x
  3. Step 3: Cross multiply
    612,041.20x = 917,624.40 × 274,805.80
  4. Step 4: Simplify right side
    612,041.20x = 252,168,507,341.52
  5. Step 5: Solve for x
    x = 252,168,507,341.52/612,041.20
  6. Step 6: Final answer
    x = 412,012.31

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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.