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Finding the Fourth Proportional to 708,358.44, 977,521.86 and 386,066.28

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Solution

The fourth proportional to 708,358.44, 977,521.86 and 386,066.28 is: 532,764.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,358.44 : 977,521.86 = 386,066.28 : x
  2. Step 2: Convert to fraction form
    708,358.44/977,521.86 = 386,066.28/x
  3. Step 3: Cross multiply
    708,358.44x = 977,521.86 × 386,066.28
  4. Step 4: Simplify right side
    708,358.44x = 377,388,228,108.88
  5. Step 5: Solve for x
    x = 377,388,228,108.88/708,358.44
  6. Step 6: Final answer
    x = 532,764.50

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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.