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Finding the Fourth Proportional to 660,719,196.52, 911,534,441.52 and 378,310,720.12

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Solution

The fourth proportional to 660,719,196.52, 911,534,441.52 and 378,310,720.12 is: 521,921,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,719,196.52 : 911,534,441.52 = 378,310,720.12 : x
  2. Step 2: Convert to fraction form
    660,719,196.52/911,534,441.52 = 378,310,720.12/x
  3. Step 3: Cross multiply
    660,719,196.52x = 911,534,441.52 × 378,310,720.12
  4. Step 4: Simplify right side
    660,719,196.52x = 344,843,250,985,613,248
  5. Step 5: Solve for x
    x = 344,843,250,985,613,248/660,719,196.52
  6. Step 6: Final answer
    x = 521,921,041.20

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