Home / 920,520.80-1,270,347.62-507,087.56

Finding the Fourth Proportional to 920,520.80, 1,270,347.62 and 507,087.56

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Solution

The fourth proportional to 920,520.80, 1,270,347.62 and 507,087.56 is: 699,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,520.80 : 1,270,347.62 = 507,087.56 : x
  2. Step 2: Convert to fraction form
    920,520.80/1,270,347.62 = 507,087.56/x
  3. Step 3: Cross multiply
    920,520.80x = 1,270,347.62 × 507,087.56
  4. Step 4: Simplify right side
    920,520.80x = 644,177,479,421.20
  5. Step 5: Solve for x
    x = 644,177,479,421.20/920,520.80
  6. Step 6: Final answer
    x = 699,796.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.