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Finding the Fourth Proportional to 520,313.70, 780,470.64 and 146,336.70

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Solution

The fourth proportional to 520,313.70, 780,470.64 and 146,336.70 is: 219,505.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,313.70 : 780,470.64 = 146,336.70 : x
  2. Step 2: Convert to fraction form
    520,313.70/780,470.64 = 146,336.70/x
  3. Step 3: Cross multiply
    520,313.70x = 780,470.64 × 146,336.70
  4. Step 4: Simplify right side
    520,313.70x = 114,211,497,904.49
  5. Step 5: Solve for x
    x = 114,211,497,904.49/520,313.70
  6. Step 6: Final answer
    x = 219,505.08

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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.