Home / 728,698,008.11-1,091,309,432.76-465,554,750.72

Finding the Fourth Proportional to 728,698,008.11, 1,091,309,432.76 and 465,554,750.72

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Solution

The fourth proportional to 728,698,008.11, 1,091,309,432.76 and 465,554,750.72 is: 697,222,011.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,698,008.11 : 1,091,309,432.76 = 465,554,750.72 : x
  2. Step 2: Convert to fraction form
    728,698,008.11/1,091,309,432.76 = 465,554,750.72/x
  3. Step 3: Cross multiply
    728,698,008.11x = 1,091,309,432.76 × 465,554,750.72
  4. Step 4: Simplify right side
    728,698,008.11x = 508,064,290,921,509,824
  5. Step 5: Solve for x
    x = 508,064,290,921,509,824/728,698,008.11
  6. Step 6: Final answer
    x = 697,222,011.41

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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.