Home / 780,398,299.82-1,170,728,663.15-386,944,543.83

Finding the Fourth Proportional to 780,398,299.82, 1,170,728,663.15 and 386,944,543.83

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Solution

The fourth proportional to 780,398,299.82, 1,170,728,663.15 and 386,944,543.83 is: 580,481,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,398,299.82 : 1,170,728,663.15 = 386,944,543.83 : x
  2. Step 2: Convert to fraction form
    780,398,299.82/1,170,728,663.15 = 386,944,543.83/x
  3. Step 3: Cross multiply
    780,398,299.82x = 1,170,728,663.15 × 386,944,543.83
  4. Step 4: Simplify right side
    780,398,299.82x = 453,007,068,507,565,504
  5. Step 5: Solve for x
    x = 453,007,068,507,565,504/780,398,299.82
  6. Step 6: Final answer
    x = 580,481,875.23

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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.