Home / 679,115,429.20-1,018,673,143.80-194,441,237.20

Finding the Fourth Proportional to 679,115,429.20, 1,018,673,143.80 and 194,441,237.20

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Solution

The fourth proportional to 679,115,429.20, 1,018,673,143.80 and 194,441,237.20 is: 291,661,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,115,429.20 : 1,018,673,143.80 = 194,441,237.20 : x
  2. Step 2: Convert to fraction form
    679,115,429.20/1,018,673,143.80 = 194,441,237.20/x
  3. Step 3: Cross multiply
    679,115,429.20x = 1,018,673,143.80 × 194,441,237.20
  4. Step 4: Simplify right side
    679,115,429.20x = 198,072,066,382,885,472
  5. Step 5: Solve for x
    x = 198,072,066,382,885,472/679,115,429.20
  6. Step 6: Final answer
    x = 291,661,855.80

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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.