Home / 789,859.20-1,184,011.20-390,561.60

Finding the Fourth Proportional to 789,859.20, 1,184,011.20 and 390,561.60

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Solution

The fourth proportional to 789,859.20, 1,184,011.20 and 390,561.60 is: 585,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,859.20 : 1,184,011.20 = 390,561.60 : x
  2. Step 2: Convert to fraction form
    789,859.20/1,184,011.20 = 390,561.60/x
  3. Step 3: Cross multiply
    789,859.20x = 1,184,011.20 × 390,561.60
  4. Step 4: Simplify right side
    789,859.20x = 462,429,308,689.92
  5. Step 5: Solve for x
    x = 462,429,308,689.92/789,859.20
  6. Step 6: Final answer
    x = 585,457.90

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Double scale
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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.