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Finding the Fourth Proportional to 708,085.22, 977,145.30 and 385,797.68

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Solution

The fourth proportional to 708,085.22, 977,145.30 and 385,797.68 is: 532,394.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,085.22 : 977,145.30 = 385,797.68 : x
  2. Step 2: Convert to fraction form
    708,085.22/977,145.30 = 385,797.68/x
  3. Step 3: Cross multiply
    708,085.22x = 977,145.30 × 385,797.68
  4. Step 4: Simplify right side
    708,085.22x = 376,980,389,762.90
  5. Step 5: Solve for x
    x = 376,980,389,762.90/708,085.22
  6. Step 6: Final answer
    x = 532,394.09

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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.