Home / 1,276,856,203.18-1,915,341,385.47-391,477,859.14

Finding the Fourth Proportional to 1,276,856,203.18, 1,915,341,385.47 and 391,477,859.14

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Solution

The fourth proportional to 1,276,856,203.18, 1,915,341,385.47 and 391,477,859.14 is: 587,234,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,856,203.18 : 1,915,341,385.47 = 391,477,859.14 : x
  2. Step 2: Convert to fraction form
    1,276,856,203.18/1,915,341,385.47 = 391,477,859.14/x
  3. Step 3: Cross multiply
    1,276,856,203.18x = 1,915,341,385.47 × 391,477,859.14
  4. Step 4: Simplify right side
    1,276,856,203.18x = 749,813,745,106,037,120
  5. Step 5: Solve for x
    x = 749,813,745,106,037,120/1,276,856,203.18
  6. Step 6: Final answer
    x = 587,234,289.37

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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.