Home / 1,188,611,999.40-1,782,917,999.10-370,722,988.20

Finding the Fourth Proportional to 1,188,611,999.40, 1,782,917,999.10 and 370,722,988.20

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Solution

The fourth proportional to 1,188,611,999.40, 1,782,917,999.10 and 370,722,988.20 is: 556,084,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,611,999.40 : 1,782,917,999.10 = 370,722,988.20 : x
  2. Step 2: Convert to fraction form
    1,188,611,999.40/1,782,917,999.10 = 370,722,988.20/x
  3. Step 3: Cross multiply
    1,188,611,999.40x = 1,782,917,999.10 × 370,722,988.20
  4. Step 4: Simplify right side
    1,188,611,999.40x = 660,968,688,341,916,800
  5. Step 5: Solve for x
    x = 660,968,688,341,916,800/1,188,611,999.40
  6. Step 6: Final answer
    x = 556,084,482.30

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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.