Home / 711,225.66-981,508.47-405,295.50

Finding the Fourth Proportional to 711,225.66, 981,508.47 and 405,295.50

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Solution

The fourth proportional to 711,225.66, 981,508.47 and 405,295.50 is: 559,317.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,225.66 : 981,508.47 = 405,295.50 : x
  2. Step 2: Convert to fraction form
    711,225.66/981,508.47 = 405,295.50/x
  3. Step 3: Cross multiply
    711,225.66x = 981,508.47 × 405,295.50
  4. Step 4: Simplify right side
    711,225.66x = 397,800,966,102.89
  5. Step 5: Solve for x
    x = 397,800,966,102.89/711,225.66
  6. Step 6: Final answer
    x = 559,317.51

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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.