Home / 811,364.94-1,118,665.71-520,463.61

Finding the Fourth Proportional to 811,364.94, 1,118,665.71 and 520,463.61

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Solution

The fourth proportional to 811,364.94, 1,118,665.71 and 520,463.61 is: 717,586.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,364.94 : 1,118,665.71 = 520,463.61 : x
  2. Step 2: Convert to fraction form
    811,364.94/1,118,665.71 = 520,463.61/x
  3. Step 3: Cross multiply
    811,364.94x = 1,118,665.71 × 520,463.61
  4. Step 4: Simplify right side
    811,364.94x = 582,224,793,809.81
  5. Step 5: Solve for x
    x = 582,224,793,809.81/811,364.94
  6. Step 6: Final answer
    x = 717,586.83

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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.