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Finding the Fourth Proportional to 470,570.40, 705,855.60 and 439,466.40

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Solution

The fourth proportional to 470,570.40, 705,855.60 and 439,466.40 is: 659,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,570.40 : 705,855.60 = 439,466.40 : x
  2. Step 2: Convert to fraction form
    470,570.40/705,855.60 = 439,466.40/x
  3. Step 3: Cross multiply
    470,570.40x = 705,855.60 × 439,466.40
  4. Step 4: Simplify right side
    470,570.40x = 310,199,819,451.84
  5. Step 5: Solve for x
    x = 310,199,819,451.84/470,570.40
  6. Step 6: Final answer
    x = 659,199.60

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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.