Home / 634,287,485.78-875,322,703.68-355,834,988.02

Finding the Fourth Proportional to 634,287,485.78, 875,322,703.68 and 355,834,988.02

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Solution

The fourth proportional to 634,287,485.78, 875,322,703.68 and 355,834,988.02 is: 491,055,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,287,485.78 : 875,322,703.68 = 355,834,988.02 : x
  2. Step 2: Convert to fraction form
    634,287,485.78/875,322,703.68 = 355,834,988.02/x
  3. Step 3: Cross multiply
    634,287,485.78x = 875,322,703.68 × 355,834,988.02
  4. Step 4: Simplify right side
    634,287,485.78x = 311,470,443,776,907,008
  5. Step 5: Solve for x
    x = 311,470,443,776,907,008/634,287,485.78
  6. Step 6: Final answer
    x = 491,055,634.49

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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.