Home / 1,421,242,150.72-1,961,163,173.28-786,061,707.88

Finding the Fourth Proportional to 1,421,242,150.72, 1,961,163,173.28 and 786,061,707.88

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Solution

The fourth proportional to 1,421,242,150.72, 1,961,163,173.28 and 786,061,707.88 is: 1,084,681,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,242,150.72 : 1,961,163,173.28 = 786,061,707.88 : x
  2. Step 2: Convert to fraction form
    1,421,242,150.72/1,961,163,173.28 = 786,061,707.88/x
  3. Step 3: Cross multiply
    1,421,242,150.72x = 1,961,163,173.28 × 786,061,707.88
  4. Step 4: Simplify right side
    1,421,242,150.72x = 1,541,595,273,419,837,184
  5. Step 5: Solve for x
    x = 1,541,595,273,419,837,184/1,421,242,150.72
  6. Step 6: Final answer
    x = 1,084,681,644.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.