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Finding the Fourth Proportional to 510,200.60, 765,300.90 and 439,341.80

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Solution

The fourth proportional to 510,200.60, 765,300.90 and 439,341.80 is: 659,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,200.60 : 765,300.90 = 439,341.80 : x
  2. Step 2: Convert to fraction form
    510,200.60/765,300.90 = 439,341.80/x
  3. Step 3: Cross multiply
    510,200.60x = 765,300.90 × 439,341.80
  4. Step 4: Simplify right side
    510,200.60x = 336,228,674,947.62
  5. Step 5: Solve for x
    x = 336,228,674,947.62/510,200.60
  6. Step 6: Final answer
    x = 659,012.70

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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.