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Finding the Fourth Proportional to 647,846.80, 971,332.80 and 344,291.20

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Solution

The fourth proportional to 647,846.80, 971,332.80 and 344,291.20 is: 516,204.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,846.80 : 971,332.80 = 344,291.20 : x
  2. Step 2: Convert to fraction form
    647,846.80/971,332.80 = 344,291.20/x
  3. Step 3: Cross multiply
    647,846.80x = 971,332.80 × 344,291.20
  4. Step 4: Simplify right side
    647,846.80x = 334,421,335,311.36
  5. Step 5: Solve for x
    x = 334,421,335,311.36/647,846.80
  6. Step 6: Final answer
    x = 516,204.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.