Home / 485,196,037.72-728,121,527.67-190,054,548.76

Finding the Fourth Proportional to 485,196,037.72, 728,121,527.67 and 190,054,548.76

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Solution

The fourth proportional to 485,196,037.72, 728,121,527.67 and 190,054,548.76 is: 285,210,095.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,196,037.72 : 728,121,527.67 = 190,054,548.76 : x
  2. Step 2: Convert to fraction form
    485,196,037.72/728,121,527.67 = 190,054,548.76/x
  3. Step 3: Cross multiply
    485,196,037.72x = 728,121,527.67 × 190,054,548.76
  4. Step 4: Simplify right side
    485,196,037.72x = 138,382,808,383,763,696
  5. Step 5: Solve for x
    x = 138,382,808,383,763,696/485,196,037.72
  6. Step 6: Final answer
    x = 285,210,095.77

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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.