Home / 30,430,195,543.80-41,976,222,773.72-18,978,883,509.92

Finding the Fourth Proportional to 30,430,195,543.80, 41,976,222,773.72 and 18,978,883,509.92

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Solution

The fourth proportional to 30,430,195,543.80, 41,976,222,773.72 and 18,978,883,509.92 is: 26,179,977,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430,195,543.80 : 41,976,222,773.72 = 18,978,883,509.92 : x
  2. Step 2: Convert to fraction form
    30,430,195,543.80/41,976,222,773.72 = 18,978,883,509.92/x
  3. Step 3: Cross multiply
    30,430,195,543.80x = 41,976,222,773.72 × 18,978,883,509.92
  4. Step 4: Simplify right side
    30,430,195,543.80x = 796,661,842,208,578,076,672
  5. Step 5: Solve for x
    x = 796,661,842,208,578,076,672/30,430,195,543.80
  6. Step 6: Final answer
    x = 26,179,977,748.15

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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.