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Finding the Fourth Proportional to 708,651.54, 977,925.96 and 386,364.42

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Solution

The fourth proportional to 708,651.54, 977,925.96 and 386,364.42 is: 533,175.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,651.54 : 977,925.96 = 386,364.42 : x
  2. Step 2: Convert to fraction form
    708,651.54/977,925.96 = 386,364.42/x
  3. Step 3: Cross multiply
    708,651.54x = 977,925.96 × 386,364.42
  4. Step 4: Simplify right side
    708,651.54x = 377,835,796,338.34
  5. Step 5: Solve for x
    x = 377,835,796,338.34/708,651.54
  6. Step 6: Final answer
    x = 533,175.72

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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.