Home / 885,777.80-1,328,666.70-324,739.40

Finding the Fourth Proportional to 885,777.80, 1,328,666.70 and 324,739.40

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Solution

The fourth proportional to 885,777.80, 1,328,666.70 and 324,739.40 is: 487,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,777.80 : 1,328,666.70 = 324,739.40 : x
  2. Step 2: Convert to fraction form
    885,777.80/1,328,666.70 = 324,739.40/x
  3. Step 3: Cross multiply
    885,777.80x = 1,328,666.70 × 324,739.40
  4. Step 4: Simplify right side
    885,777.80x = 431,470,426,957.98
  5. Step 5: Solve for x
    x = 431,470,426,957.98/885,777.80
  6. Step 6: Final answer
    x = 487,109.10

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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.