Home / 1,291,912,391.20-1,935,559,114.80-786,208,007.20

Finding the Fourth Proportional to 1,291,912,391.20, 1,935,559,114.80 and 786,208,007.20

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Solution

The fourth proportional to 1,291,912,391.20, 1,935,559,114.80 and 786,208,007.20 is: 1,177,906,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,912,391.20 : 1,935,559,114.80 = 786,208,007.20 : x
  2. Step 2: Convert to fraction form
    1,291,912,391.20/1,935,559,114.80 = 786,208,007.20/x
  3. Step 3: Cross multiply
    1,291,912,391.20x = 1,935,559,114.80 × 786,208,007.20
  4. Step 4: Simplify right side
    1,291,912,391.20x = 1,521,752,074,464,704,000
  5. Step 5: Solve for x
    x = 1,521,752,074,464,704,000/1,291,912,391.20
  6. Step 6: Final answer
    x = 1,177,906,555.30

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1.5x scale

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.