Home / 918,271.20-1,377,406.80-445,879.20

Finding the Fourth Proportional to 918,271.20, 1,377,406.80 and 445,879.20

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Solution

The fourth proportional to 918,271.20, 1,377,406.80 and 445,879.20 is: 668,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,271.20 : 1,377,406.80 = 445,879.20 : x
  2. Step 2: Convert to fraction form
    918,271.20/1,377,406.80 = 445,879.20/x
  3. Step 3: Cross multiply
    918,271.20x = 1,377,406.80 × 445,879.20
  4. Step 4: Simplify right side
    918,271.20x = 614,157,042,058.56
  5. Step 5: Solve for x
    x = 614,157,042,058.56/918,271.20
  6. Step 6: Final answer
    x = 668,818.80

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Similar ratio
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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.