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Finding the Fourth Proportional to 708,297.20, 977,421.60 and 386,000.37

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Solution

The fourth proportional to 708,297.20, 977,421.60 and 386,000.37 is: 532,664.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,297.20 : 977,421.60 = 386,000.37 : x
  2. Step 2: Convert to fraction form
    708,297.20/977,421.60 = 386,000.37/x
  3. Step 3: Cross multiply
    708,297.20x = 977,421.60 × 386,000.37
  4. Step 4: Simplify right side
    708,297.20x = 377,285,099,245.99
  5. Step 5: Solve for x
    x = 377,285,099,245.99/708,297.20
  6. Step 6: Final answer
    x = 532,664.96

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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.