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Finding the Fourth Proportional to 703,606.94, 971,081.78 and 445,507.86

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Solution

The fourth proportional to 703,606.94, 971,081.78 and 445,507.86 is: 614,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,606.94 : 971,081.78 = 445,507.86 : x
  2. Step 2: Convert to fraction form
    703,606.94/971,081.78 = 445,507.86/x
  3. Step 3: Cross multiply
    703,606.94x = 971,081.78 × 445,507.86
  4. Step 4: Simplify right side
    703,606.94x = 432,624,563,465.25
  5. Step 5: Solve for x
    x = 432,624,563,465.25/703,606.94
  6. Step 6: Final answer
    x = 614,866.83

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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.