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Finding the Fourth Proportional to 509,063.40, 763,595.10 and 329,437.80

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Solution

The fourth proportional to 509,063.40, 763,595.10 and 329,437.80 is: 494,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,063.40 : 763,595.10 = 329,437.80 : x
  2. Step 2: Convert to fraction form
    509,063.40/763,595.10 = 329,437.80/x
  3. Step 3: Cross multiply
    509,063.40x = 763,595.10 × 329,437.80
  4. Step 4: Simplify right side
    509,063.40x = 251,557,089,834.78
  5. Step 5: Solve for x
    x = 251,557,089,834.78/509,063.40
  6. Step 6: Final answer
    x = 494,156.70

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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.