Home / 678,742,930.90-1,018,114,396.35-269,799,081.40

Finding the Fourth Proportional to 678,742,930.90, 1,018,114,396.35 and 269,799,081.40

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Solution

The fourth proportional to 678,742,930.90, 1,018,114,396.35 and 269,799,081.40 is: 404,698,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,930.90 : 1,018,114,396.35 = 269,799,081.40 : x
  2. Step 2: Convert to fraction form
    678,742,930.90/1,018,114,396.35 = 269,799,081.40/x
  3. Step 3: Cross multiply
    678,742,930.90x = 1,018,114,396.35 × 269,799,081.40
  4. Step 4: Simplify right side
    678,742,930.90x = 274,686,328,895,345,504
  5. Step 5: Solve for x
    x = 274,686,328,895,345,504/678,742,930.90
  6. Step 6: Final answer
    x = 404,698,622.10

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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.