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Finding the Fourth Proportional to 647,544.30, 971,316.45 and 629,112.30

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Solution

The fourth proportional to 647,544.30, 971,316.45 and 629,112.30 is: 943,668.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,544.30 : 971,316.45 = 629,112.30 : x
  2. Step 2: Convert to fraction form
    647,544.30/971,316.45 = 629,112.30/x
  3. Step 3: Cross multiply
    647,544.30x = 971,316.45 × 629,112.30
  4. Step 4: Simplify right side
    647,544.30x = 611,067,125,887.34
  5. Step 5: Solve for x
    x = 611,067,125,887.34/647,544.30
  6. Step 6: Final answer
    x = 943,668.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.