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Finding the Fourth Proportional to 706,818.80, 975,387.72 and 384,520.64

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Solution

The fourth proportional to 706,818.80, 975,387.72 and 384,520.64 is: 530,626.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,818.80 : 975,387.72 = 384,520.64 : x
  2. Step 2: Convert to fraction form
    706,818.80/975,387.72 = 384,520.64/x
  3. Step 3: Cross multiply
    706,818.80x = 975,387.72 × 384,520.64
  4. Step 4: Simplify right side
    706,818.80x = 375,056,710,342.54
  5. Step 5: Solve for x
    x = 375,056,710,342.54/706,818.80
  6. Step 6: Final answer
    x = 530,626.39

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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.