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Finding the Fourth Proportional to 563,042.76, 777,011.64 and 321,320.52

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Solution

The fourth proportional to 563,042.76, 777,011.64 and 321,320.52 is: 443,429.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,042.76 : 777,011.64 = 321,320.52 : x
  2. Step 2: Convert to fraction form
    563,042.76/777,011.64 = 321,320.52/x
  3. Step 3: Cross multiply
    563,042.76x = 777,011.64 × 321,320.52
  4. Step 4: Simplify right side
    563,042.76x = 249,669,784,210.85
  5. Step 5: Solve for x
    x = 249,669,784,210.85/563,042.76
  6. Step 6: Final answer
    x = 443,429.53

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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.