Home / 678,742,958.40-1,018,114,437.60-269,799,108.90

Finding the Fourth Proportional to 678,742,958.40, 1,018,114,437.60 and 269,799,108.90

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Solution

The fourth proportional to 678,742,958.40, 1,018,114,437.60 and 269,799,108.90 is: 404,698,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,958.40 : 1,018,114,437.60 = 269,799,108.90 : x
  2. Step 2: Convert to fraction form
    678,742,958.40/1,018,114,437.60 = 269,799,108.90/x
  3. Step 3: Cross multiply
    678,742,958.40x = 1,018,114,437.60 × 269,799,108.90
  4. Step 4: Simplify right side
    678,742,958.40x = 274,686,368,022,704,640
  5. Step 5: Solve for x
    x = 274,686,368,022,704,640/678,742,958.40
  6. Step 6: Final answer
    x = 404,698,663.35

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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.