Home / 1,318,536,056.51-1,819,512,936.65-782,710,625.20

Finding the Fourth Proportional to 1,318,536,056.51, 1,819,512,936.65 and 782,710,625.20

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Solution

The fourth proportional to 1,318,536,056.51, 1,819,512,936.65 and 782,710,625.20 is: 1,080,100,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,536,056.51 : 1,819,512,936.65 = 782,710,625.20 : x
  2. Step 2: Convert to fraction form
    1,318,536,056.51/1,819,512,936.65 = 782,710,625.20/x
  3. Step 3: Cross multiply
    1,318,536,056.51x = 1,819,512,936.65 × 782,710,625.20
  4. Step 4: Simplify right side
    1,318,536,056.51x = 1,424,152,108,204,809,728
  5. Step 5: Solve for x
    x = 1,424,152,108,204,809,728/1,318,536,056.51
  6. Step 6: Final answer
    x = 1,080,100,996.23

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Double scale
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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.