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Finding the Fourth Proportional to 708,137.64, 977,241.51 and 385,861.32

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Solution

The fourth proportional to 708,137.64, 977,241.51 and 385,861.32 is: 532,494.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,137.64 : 977,241.51 = 385,861.32 : x
  2. Step 2: Convert to fraction form
    708,137.64/977,241.51 = 385,861.32/x
  3. Step 3: Cross multiply
    708,137.64x = 977,241.51 × 385,861.32
  4. Step 4: Simplify right side
    708,137.64x = 377,079,699,007.39
  5. Step 5: Solve for x
    x = 377,079,699,007.39/708,137.64
  6. Step 6: Final answer
    x = 532,494.92

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1.5x scale

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.