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Finding the Fourth Proportional to 520,262.69, 780,394.34 and 146,285.69

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Solution

The fourth proportional to 520,262.69, 780,394.34 and 146,285.69 is: 219,428.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,262.69 : 780,394.34 = 146,285.69 : x
  2. Step 2: Convert to fraction form
    520,262.69/780,394.34 = 146,285.69/x
  3. Step 3: Cross multiply
    520,262.69x = 780,394.34 × 146,285.69
  4. Step 4: Simplify right side
    520,262.69x = 114,160,523,767.57
  5. Step 5: Solve for x
    x = 114,160,523,767.57/520,262.69
  6. Step 6: Final answer
    x = 219,428.62

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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.