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Finding the Fourth Proportional to 485,969,357.94, 670,390,646.49 and 295,179,604.88

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Solution

The fourth proportional to 485,969,357.94, 670,390,646.49 and 295,179,604.88 is: 407,197,785.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,969,357.94 : 670,390,646.49 = 295,179,604.88 : x
  2. Step 2: Convert to fraction form
    485,969,357.94/670,390,646.49 = 295,179,604.88/x
  3. Step 3: Cross multiply
    485,969,357.94x = 670,390,646.49 × 295,179,604.88
  4. Step 4: Simplify right side
    485,969,357.94x = 197,885,646,144,221,088
  5. Step 5: Solve for x
    x = 197,885,646,144,221,088/485,969,357.94
  6. Step 6: Final answer
    x = 407,197,785.03

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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.