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Finding the Fourth Proportional to 519,749.70, 779,624.55 and 283,553.70

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Solution

The fourth proportional to 519,749.70, 779,624.55 and 283,553.70 is: 425,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,749.70 : 779,624.55 = 283,553.70 : x
  2. Step 2: Convert to fraction form
    519,749.70/779,624.55 = 283,553.70/x
  3. Step 3: Cross multiply
    519,749.70x = 779,624.55 × 283,553.70
  4. Step 4: Simplify right side
    519,749.70x = 221,065,425,763.34
  5. Step 5: Solve for x
    x = 221,065,425,763.34/519,749.70
  6. Step 6: Final answer
    x = 425,330.55

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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.