Home / 787,251,520.52-1,180,420,420.74-372,724,861.76

Finding the Fourth Proportional to 787,251,520.52, 1,180,420,420.74 and 372,724,861.76

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Solution

The fourth proportional to 787,251,520.52, 1,180,420,420.74 and 372,724,861.76 is: 558,870,991.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,251,520.52 : 1,180,420,420.74 = 372,724,861.76 : x
  2. Step 2: Convert to fraction form
    787,251,520.52/1,180,420,420.74 = 372,724,861.76/x
  3. Step 3: Cross multiply
    787,251,520.52x = 1,180,420,420.74 × 372,724,861.76
  4. Step 4: Simplify right side
    787,251,520.52x = 439,972,038,138,997,504
  5. Step 5: Solve for x
    x = 439,972,038,138,997,504/787,251,520.52
  6. Step 6: Final answer
    x = 558,870,991.89

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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.