Home / 678,742,913.90-1,018,114,370.85-269,799,064.40

Finding the Fourth Proportional to 678,742,913.90, 1,018,114,370.85 and 269,799,064.40

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Solution

The fourth proportional to 678,742,913.90, 1,018,114,370.85 and 269,799,064.40 is: 404,698,596.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,913.90 : 1,018,114,370.85 = 269,799,064.40 : x
  2. Step 2: Convert to fraction form
    678,742,913.90/1,018,114,370.85 = 269,799,064.40/x
  3. Step 3: Cross multiply
    678,742,913.90x = 1,018,114,370.85 × 269,799,064.40
  4. Step 4: Simplify right side
    678,742,913.90x = 274,686,304,707,524,608
  5. Step 5: Solve for x
    x = 274,686,304,707,524,608/678,742,913.90
  6. Step 6: Final answer
    x = 404,698,596.60

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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.