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Finding the Fourth Proportional to 703,989.93, 971,640.05 and 417,667.89

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Solution

The fourth proportional to 703,989.93, 971,640.05 and 417,667.89 is: 576,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,989.93 : 971,640.05 = 417,667.89 : x
  2. Step 2: Convert to fraction form
    703,989.93/971,640.05 = 417,667.89/x
  3. Step 3: Cross multiply
    703,989.93x = 971,640.05 × 417,667.89
  4. Step 4: Simplify right side
    703,989.93x = 405,822,847,434.66
  5. Step 5: Solve for x
    x = 405,822,847,434.66/703,989.93
  6. Step 6: Final answer
    x = 576,461.15

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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.