Home / 420,816,811,825.28-631,161,439,191.95-114,530,459,505.13

Finding the Fourth Proportional to 420,816,811,825.28, 631,161,439,191.95 and 114,530,459,505.13

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Solution

The fourth proportional to 420,816,811,825.28, 631,161,439,191.95 and 114,530,459,505.13 is: 171,778,331,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,816,811,825.28 : 631,161,439,191.95 = 114,530,459,505.13 : x
  2. Step 2: Convert to fraction form
    420,816,811,825.28/631,161,439,191.95 = 114,530,459,505.13/x
  3. Step 3: Cross multiply
    420,816,811,825.28x = 631,161,439,191.95 × 114,530,459,505.13
  4. Step 4: Simplify right side
    420,816,811,825.28x = 72,287,209,652,573,200,973,824
  5. Step 5: Solve for x
    x = 72,287,209,652,573,200,973,824/420,816,811,825.28
  6. Step 6: Final answer
    x = 171,778,331,143.73

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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.