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Finding the Fourth Proportional to 708,343.74, 977,485.90 and 386,046.94

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Solution

The fourth proportional to 708,343.74, 977,485.90 and 386,046.94 is: 532,729.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,343.74 : 977,485.90 = 386,046.94 : x
  2. Step 2: Convert to fraction form
    708,343.74/977,485.90 = 386,046.94/x
  3. Step 3: Cross multiply
    708,343.74x = 977,485.90 × 386,046.94
  4. Step 4: Simplify right side
    708,343.74x = 377,355,440,588.15
  5. Step 5: Solve for x
    x = 377,355,440,588.15/708,343.74
  6. Step 6: Final answer
    x = 532,729.27

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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.