Home / 678,742,919.40-1,018,114,379.10-269,799,069.90

Finding the Fourth Proportional to 678,742,919.40, 1,018,114,379.10 and 269,799,069.90

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Solution

The fourth proportional to 678,742,919.40, 1,018,114,379.10 and 269,799,069.90 is: 404,698,604.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,919.40 : 1,018,114,379.10 = 269,799,069.90 : x
  2. Step 2: Convert to fraction form
    678,742,919.40/1,018,114,379.10 = 269,799,069.90/x
  3. Step 3: Cross multiply
    678,742,919.40x = 1,018,114,379.10 × 269,799,069.90
  4. Step 4: Simplify right side
    678,742,919.40x = 274,686,312,532,995,968
  5. Step 5: Solve for x
    x = 274,686,312,532,995,968/678,742,919.40
  6. Step 6: Final answer
    x = 404,698,604.85

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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.