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Finding the Fourth Proportional to 708,654.16, 977,942.46 and 386,364.52

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Solution

The fourth proportional to 708,654.16, 977,942.46 and 386,364.52 is: 533,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,654.16 : 977,942.46 = 386,364.52 : x
  2. Step 2: Convert to fraction form
    708,654.16/977,942.46 = 386,364.52/x
  3. Step 3: Cross multiply
    708,654.16x = 977,942.46 × 386,364.52
  4. Step 4: Simplify right side
    708,654.16x = 377,842,269,145.52
  5. Step 5: Solve for x
    x = 377,842,269,145.52/708,654.16
  6. Step 6: Final answer
    x = 533,182.88

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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.