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Finding the Fourth Proportional to 520,323.40, 780,619.43 and 160,486.16

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Solution

The fourth proportional to 520,323.40, 780,619.43 and 160,486.16 is: 240,770.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,323.40 : 780,619.43 = 160,486.16 : x
  2. Step 2: Convert to fraction form
    520,323.40/780,619.43 = 160,486.16/x
  3. Step 3: Cross multiply
    520,323.40x = 780,619.43 × 160,486.16
  4. Step 4: Simplify right side
    520,323.40x = 125,278,615,891.21
  5. Step 5: Solve for x
    x = 125,278,615,891.21/520,323.40
  6. Step 6: Final answer
    x = 240,770.68

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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.