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Finding the Fourth Proportional to 692,661.89, 955,864.05 and 386,742.98

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Solution

The fourth proportional to 692,661.89, 955,864.05 and 386,742.98 is: 533,700.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,661.89 : 955,864.05 = 386,742.98 : x
  2. Step 2: Convert to fraction form
    692,661.89/955,864.05 = 386,742.98/x
  3. Step 3: Cross multiply
    692,661.89x = 955,864.05 × 386,742.98
  4. Step 4: Simplify right side
    692,661.89x = 369,673,711,171.87
  5. Step 5: Solve for x
    x = 369,673,711,171.87/692,661.89
  6. Step 6: Final answer
    x = 533,700.09

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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.