Home / 678,742,945.40-1,018,114,418.10-269,799,095.90

Finding the Fourth Proportional to 678,742,945.40, 1,018,114,418.10 and 269,799,095.90

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Solution

The fourth proportional to 678,742,945.40, 1,018,114,418.10 and 269,799,095.90 is: 404,698,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,945.40 : 1,018,114,418.10 = 269,799,095.90 : x
  2. Step 2: Convert to fraction form
    678,742,945.40/1,018,114,418.10 = 269,799,095.90/x
  3. Step 3: Cross multiply
    678,742,945.40x = 1,018,114,418.10 × 269,799,095.90
  4. Step 4: Simplify right side
    678,742,945.40x = 274,686,349,526,134,592
  5. Step 5: Solve for x
    x = 274,686,349,526,134,592/678,742,945.40
  6. Step 6: Final answer
    x = 404,698,643.85

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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.