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Finding the Fourth Proportional to 719,665,661.76, 993,176,976.78 and 402,133,615.44

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Solution

The fourth proportional to 719,665,661.76, 993,176,976.78 and 402,133,615.44 is: 554,965,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,665,661.76 : 993,176,976.78 = 402,133,615.44 : x
  2. Step 2: Convert to fraction form
    719,665,661.76/993,176,976.78 = 402,133,615.44/x
  3. Step 3: Cross multiply
    719,665,661.76x = 993,176,976.78 × 402,133,615.44
  4. Step 4: Simplify right side
    719,665,661.76x = 399,389,848,444,310,336
  5. Step 5: Solve for x
    x = 399,389,848,444,310,336/719,665,661.76
  6. Step 6: Final answer
    x = 554,965,826.03

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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.