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Finding the Fourth Proportional to 708,272.87, 977,391.74 and 385,976.39

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Solution

The fourth proportional to 708,272.87, 977,391.74 and 385,976.39 is: 532,633.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,272.87 : 977,391.74 = 385,976.39 : x
  2. Step 2: Convert to fraction form
    708,272.87/977,391.74 = 385,976.39/x
  3. Step 3: Cross multiply
    708,272.87x = 977,391.74 × 385,976.39
  4. Step 4: Simplify right side
    708,272.87x = 377,250,133,491.14
  5. Step 5: Solve for x
    x = 377,250,133,491.14/708,272.87
  6. Step 6: Final answer
    x = 532,633.89

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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.