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Finding the Fourth Proportional to 891,820,873.64, 1,337,903,583.39 and 339,080,323.84

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Solution

The fourth proportional to 891,820,873.64, 1,337,903,583.39 and 339,080,323.84 is: 508,685,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,820,873.64 : 1,337,903,583.39 = 339,080,323.84 : x
  2. Step 2: Convert to fraction form
    891,820,873.64/1,337,903,583.39 = 339,080,323.84/x
  3. Step 3: Cross multiply
    891,820,873.64x = 1,337,903,583.39 × 339,080,323.84
  4. Step 4: Simplify right side
    891,820,873.64x = 453,656,780,319,232,896
  5. Step 5: Solve for x
    x = 453,656,780,319,232,896/891,820,873.64
  6. Step 6: Final answer
    x = 508,685,985.86

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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.