Home / 711,219.64-981,500.18-405,289.48

Finding the Fourth Proportional to 711,219.64, 981,500.18 and 405,289.48

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Solution

The fourth proportional to 711,219.64, 981,500.18 and 405,289.48 is: 559,309.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,219.64 : 981,500.18 = 405,289.48 : x
  2. Step 2: Convert to fraction form
    711,219.64/981,500.18 = 405,289.48/x
  3. Step 3: Cross multiply
    711,219.64x = 981,500.18 × 405,289.48
  4. Step 4: Simplify right side
    711,219.64x = 397,791,697,572.11
  5. Step 5: Solve for x
    x = 397,791,697,572.11/711,219.64
  6. Step 6: Final answer
    x = 559,309.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.