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Finding the Fourth Proportional to 629,945.40, 944,918.10 and 346,510.20

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Solution

The fourth proportional to 629,945.40, 944,918.10 and 346,510.20 is: 519,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,945.40 : 944,918.10 = 346,510.20 : x
  2. Step 2: Convert to fraction form
    629,945.40/944,918.10 = 346,510.20/x
  3. Step 3: Cross multiply
    629,945.40x = 944,918.10 × 346,510.20
  4. Step 4: Simplify right side
    629,945.40x = 327,423,759,814.62
  5. Step 5: Solve for x
    x = 327,423,759,814.62/629,945.40
  6. Step 6: Final answer
    x = 519,765.30

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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.