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Finding the Fourth Proportional to 706,660.40, 975,207.40 and 384,387.72

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Solution

The fourth proportional to 706,660.40, 975,207.40 and 384,387.72 is: 530,463.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,660.40 : 975,207.40 = 384,387.72 : x
  2. Step 2: Convert to fraction form
    706,660.40/975,207.40 = 384,387.72/x
  3. Step 3: Cross multiply
    706,660.40x = 975,207.40 × 384,387.72
  4. Step 4: Simplify right side
    706,660.40x = 374,857,749,013.13
  5. Step 5: Solve for x
    x = 374,857,749,013.13/706,660.40
  6. Step 6: Final answer
    x = 530,463.78

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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.