Home / 728,698,009.11-1,091,309,434.26-465,554,751.72

Finding the Fourth Proportional to 728,698,009.11, 1,091,309,434.26 and 465,554,751.72

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Solution

The fourth proportional to 728,698,009.11, 1,091,309,434.26 and 465,554,751.72 is: 697,222,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,698,009.11 : 1,091,309,434.26 = 465,554,751.72 : x
  2. Step 2: Convert to fraction form
    728,698,009.11/1,091,309,434.26 = 465,554,751.72/x
  3. Step 3: Cross multiply
    728,698,009.11x = 1,091,309,434.26 × 465,554,751.72
  4. Step 4: Simplify right side
    728,698,009.11x = 508,064,292,716,608,000
  5. Step 5: Solve for x
    x = 508,064,292,716,608,000/728,698,009.11
  6. Step 6: Final answer
    x = 697,222,012.91

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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.