Home / 628,992,005.30-943,488,007.95-445,325,995.70

Finding the Fourth Proportional to 628,992,005.30, 943,488,007.95 and 445,325,995.70

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Solution

The fourth proportional to 628,992,005.30, 943,488,007.95 and 445,325,995.70 is: 667,988,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,992,005.30 : 943,488,007.95 = 445,325,995.70 : x
  2. Step 2: Convert to fraction form
    628,992,005.30/943,488,007.95 = 445,325,995.70/x
  3. Step 3: Cross multiply
    628,992,005.30x = 943,488,007.95 × 445,325,995.70
  4. Step 4: Simplify right side
    628,992,005.30x = 420,159,736,571,343,296
  5. Step 5: Solve for x
    x = 420,159,736,571,343,296/628,992,005.30
  6. Step 6: Final answer
    x = 667,988,993.55

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Double scale
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Similar ratio
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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.