Home / 1,291,912,415.20-1,935,559,150.80-786,208,031.20

Finding the Fourth Proportional to 1,291,912,415.20, 1,935,559,150.80 and 786,208,031.20

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Solution

The fourth proportional to 1,291,912,415.20, 1,935,559,150.80 and 786,208,031.20 is: 1,177,906,591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,912,415.20 : 1,935,559,150.80 = 786,208,031.20 : x
  2. Step 2: Convert to fraction form
    1,291,912,415.20/1,935,559,150.80 = 786,208,031.20/x
  3. Step 3: Cross multiply
    1,291,912,415.20x = 1,935,559,150.80 × 786,208,031.20
  4. Step 4: Simplify right side
    1,291,912,415.20x = 1,521,752,149,221,612,032
  5. Step 5: Solve for x
    x = 1,521,752,149,221,612,032/1,291,912,415.20
  6. Step 6: Final answer
    x = 1,177,906,591.28

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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.