Home / 1,161,128,933.32-1,602,306,238.80-678,365,630.52

Finding the Fourth Proportional to 1,161,128,933.32, 1,602,306,238.80 and 678,365,630.52

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Solution

The fourth proportional to 1,161,128,933.32, 1,602,306,238.80 and 678,365,630.52 is: 936,114,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,128,933.32 : 1,602,306,238.80 = 678,365,630.52 : x
  2. Step 2: Convert to fraction form
    1,161,128,933.32/1,602,306,238.80 = 678,365,630.52/x
  3. Step 3: Cross multiply
    1,161,128,933.32x = 1,602,306,238.80 × 678,365,630.52
  4. Step 4: Simplify right side
    1,161,128,933.32x = 1,086,949,481,969,691,648
  5. Step 5: Solve for x
    x = 1,086,949,481,969,691,648/1,161,128,933.32
  6. Step 6: Final answer
    x = 936,114,371.78

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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.