Home / 647,631.48-971,662.28-287,752.26

Finding the Fourth Proportional to 647,631.48, 971,662.28 and 287,752.26

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Solution

The fourth proportional to 647,631.48, 971,662.28 and 287,752.26 is: 431,723.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,631.48 : 971,662.28 = 287,752.26 : x
  2. Step 2: Convert to fraction form
    647,631.48/971,662.28 = 287,752.26/x
  3. Step 3: Cross multiply
    647,631.48x = 971,662.28 × 287,752.26
  4. Step 4: Simplify right side
    647,631.48x = 279,598,015,587.99
  5. Step 5: Solve for x
    x = 279,598,015,587.99/647,631.48
  6. Step 6: Final answer
    x = 431,723.94

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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.