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Finding the Fourth Proportional to 706,638.90, 975,133.59 and 384,348.54

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Solution

The fourth proportional to 706,638.90, 975,133.59 and 384,348.54 is: 530,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,638.90 : 975,133.59 = 384,348.54 : x
  2. Step 2: Convert to fraction form
    706,638.90/975,133.59 = 384,348.54/x
  3. Step 3: Cross multiply
    706,638.90x = 975,133.59 × 384,348.54
  4. Step 4: Simplify right side
    706,638.90x = 374,791,171,621.46
  5. Step 5: Solve for x
    x = 374,791,171,621.46/706,638.90
  6. Step 6: Final answer
    x = 530,385.71

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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.