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Finding the Fourth Proportional to 433,054.80, 649,582.20 and 389,752.20

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Solution

The fourth proportional to 433,054.80, 649,582.20 and 389,752.20 is: 584,628.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,054.80 : 649,582.20 = 389,752.20 : x
  2. Step 2: Convert to fraction form
    433,054.80/649,582.20 = 389,752.20/x
  3. Step 3: Cross multiply
    433,054.80x = 649,582.20 × 389,752.20
  4. Step 4: Simplify right side
    433,054.80x = 253,176,091,530.84
  5. Step 5: Solve for x
    x = 253,176,091,530.84/433,054.80
  6. Step 6: Final answer
    x = 584,628.30

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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.