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Finding the Fourth Proportional to 660,705,482.94, 988,902,538.48 and 485,782,137.06

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Solution

The fourth proportional to 660,705,482.94, 988,902,538.48 and 485,782,137.06 is: 727,088,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,705,482.94 : 988,902,538.48 = 485,782,137.06 : x
  2. Step 2: Convert to fraction form
    660,705,482.94/988,902,538.48 = 485,782,137.06/x
  3. Step 3: Cross multiply
    660,705,482.94x = 988,902,538.48 × 485,782,137.06
  4. Step 4: Simplify right side
    660,705,482.94x = 480,391,188,486,873,280
  5. Step 5: Solve for x
    x = 480,391,188,486,873,280/660,705,482.94
  6. Step 6: Final answer
    x = 727,088,242.63

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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.