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Finding the Fourth Proportional to 520,005.30, 780,007.97 and 340,241.76

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Solution

The fourth proportional to 520,005.30, 780,007.97 and 340,241.76 is: 510,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,005.30 : 780,007.97 = 340,241.76 : x
  2. Step 2: Convert to fraction form
    520,005.30/780,007.97 = 340,241.76/x
  3. Step 3: Cross multiply
    520,005.30x = 780,007.97 × 340,241.76
  4. Step 4: Simplify right side
    520,005.30x = 265,391,285,377.43
  5. Step 5: Solve for x
    x = 265,391,285,377.43/520,005.30
  6. Step 6: Final answer
    x = 510,362.66

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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.