Home / 678,538,078.40-1,017,807,117.60-242,331,305.60

Finding the Fourth Proportional to 678,538,078.40, 1,017,807,117.60 and 242,331,305.60

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Solution

The fourth proportional to 678,538,078.40, 1,017,807,117.60 and 242,331,305.60 is: 363,496,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,538,078.40 : 1,017,807,117.60 = 242,331,305.60 : x
  2. Step 2: Convert to fraction form
    678,538,078.40/1,017,807,117.60 = 242,331,305.60/x
  3. Step 3: Cross multiply
    678,538,078.40x = 1,017,807,117.60 × 242,331,305.60
  4. Step 4: Simplify right side
    678,538,078.40x = 246,646,527,656,980,736
  5. Step 5: Solve for x
    x = 246,646,527,656,980,736/678,538,078.40
  6. Step 6: Final answer
    x = 363,496,958.40

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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.