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Finding the Fourth Proportional to 628,992,145.80, 943,488,218.70 and 628,992,145.80

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Solution

The fourth proportional to 628,992,145.80, 943,488,218.70 and 628,992,145.80 is: 943,488,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,992,145.80 : 943,488,218.70 = 628,992,145.80 : x
  2. Step 2: Convert to fraction form
    628,992,145.80/943,488,218.70 = 628,992,145.80/x
  3. Step 3: Cross multiply
    628,992,145.80x = 943,488,218.70 × 628,992,145.80
  4. Step 4: Simplify right side
    628,992,145.80x = 593,446,679,217,132,672
  5. Step 5: Solve for x
    x = 593,446,679,217,132,672/628,992,145.80
  6. Step 6: Final answer
    x = 943,488,218.70

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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.