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Finding the Fourth Proportional to 708,469.10, 977,697.62 and 386,179.28

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Solution

The fourth proportional to 708,469.10, 977,697.62 and 386,179.28 is: 532,933.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,469.10 : 977,697.62 = 386,179.28 : x
  2. Step 2: Convert to fraction form
    708,469.10/977,697.62 = 386,179.28/x
  3. Step 3: Cross multiply
    708,469.10x = 977,697.62 × 386,179.28
  4. Step 4: Simplify right side
    708,469.10x = 377,566,562,949.31
  5. Step 5: Solve for x
    x = 377,566,562,949.31/708,469.10
  6. Step 6: Final answer
    x = 532,933.00

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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.