Home / 1,126,677,549.21-1,688,823,527.88-378,981,531.84

Finding the Fourth Proportional to 1,126,677,549.21, 1,688,823,527.88 and 378,981,531.84

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Solution

The fourth proportional to 1,126,677,549.21, 1,688,823,527.88 and 378,981,531.84 is: 568,071,075.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,677,549.21 : 1,688,823,527.88 = 378,981,531.84 : x
  2. Step 2: Convert to fraction form
    1,126,677,549.21/1,688,823,527.88 = 378,981,531.84/x
  3. Step 3: Cross multiply
    1,126,677,549.21x = 1,688,823,527.88 × 378,981,531.84
  4. Step 4: Simplify right side
    1,126,677,549.21x = 640,032,927,603,395,328
  5. Step 5: Solve for x
    x = 640,032,927,603,395,328/1,126,677,549.21
  6. Step 6: Final answer
    x = 568,071,075.93

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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.