Home / 1,291,912,416.20-1,935,559,152.30-786,208,032.20

Finding the Fourth Proportional to 1,291,912,416.20, 1,935,559,152.30 and 786,208,032.20

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Solution

The fourth proportional to 1,291,912,416.20, 1,935,559,152.30 and 786,208,032.20 is: 1,177,906,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,912,416.20 : 1,935,559,152.30 = 786,208,032.20 : x
  2. Step 2: Convert to fraction form
    1,291,912,416.20/1,935,559,152.30 = 786,208,032.20/x
  3. Step 3: Cross multiply
    1,291,912,416.20x = 1,935,559,152.30 × 786,208,032.20
  4. Step 4: Simplify right side
    1,291,912,416.20x = 1,521,752,152,336,483,072
  5. Step 5: Solve for x
    x = 1,521,752,152,336,483,072/1,291,912,416.20
  6. Step 6: Final answer
    x = 1,177,906,592.78

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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.