Home / 380,497,781.28-570,606,675.84-131,439,678.96

Finding the Fourth Proportional to 380,497,781.28, 570,606,675.84 and 131,439,678.96

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Solution

The fourth proportional to 380,497,781.28, 570,606,675.84 and 131,439,678.96 is: 197,111,158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,497,781.28 : 570,606,675.84 = 131,439,678.96 : x
  2. Step 2: Convert to fraction form
    380,497,781.28/570,606,675.84 = 131,439,678.96/x
  3. Step 3: Cross multiply
    380,497,781.28x = 570,606,675.84 × 131,439,678.96
  4. Step 4: Simplify right side
    380,497,781.28x = 75,000,358,284,842,384
  5. Step 5: Solve for x
    x = 75,000,358,284,842,384/380,497,781.28
  6. Step 6: Final answer
    x = 197,111,158.00

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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.