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Finding the Fourth Proportional to 788,385,273.36, 1,087,978,726.62 and 435,984,974.79

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Solution

The fourth proportional to 788,385,273.36, 1,087,978,726.62 and 435,984,974.79 is: 601,663,163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,385,273.36 : 1,087,978,726.62 = 435,984,974.79 : x
  2. Step 2: Convert to fraction form
    788,385,273.36/1,087,978,726.62 = 435,984,974.79/x
  3. Step 3: Cross multiply
    788,385,273.36x = 1,087,978,726.62 × 435,984,974.79
  4. Step 4: Simplify right side
    788,385,273.36x = 474,342,377,697,476,992
  5. Step 5: Solve for x
    x = 474,342,377,697,476,992/788,385,273.36
  6. Step 6: Final answer
    x = 601,663,163.59

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1.5x scale

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.