Home / 388,475,999.40-582,713,999.10-386,208,517.80

Finding the Fourth Proportional to 388,475,999.40, 582,713,999.10 and 386,208,517.80

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Solution

The fourth proportional to 388,475,999.40, 582,713,999.10 and 386,208,517.80 is: 579,312,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,475,999.40 : 582,713,999.10 = 386,208,517.80 : x
  2. Step 2: Convert to fraction form
    388,475,999.40/582,713,999.10 = 386,208,517.80/x
  3. Step 3: Cross multiply
    388,475,999.40x = 582,713,999.10 × 386,208,517.80
  4. Step 4: Simplify right side
    388,475,999.40x = 225,049,109,893,721,536
  5. Step 5: Solve for x
    x = 225,049,109,893,721,536/388,475,999.40
  6. Step 6: Final answer
    x = 579,312,776.70

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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.