Home / 579,456,010.40-869,184,015.60-395,790,000.80

Finding the Fourth Proportional to 579,456,010.40, 869,184,015.60 and 395,790,000.80

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Solution

The fourth proportional to 579,456,010.40, 869,184,015.60 and 395,790,000.80 is: 593,685,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,456,010.40 : 869,184,015.60 = 395,790,000.80 : x
  2. Step 2: Convert to fraction form
    579,456,010.40/869,184,015.60 = 395,790,000.80/x
  3. Step 3: Cross multiply
    579,456,010.40x = 869,184,015.60 × 395,790,000.80
  4. Step 4: Simplify right side
    579,456,010.40x = 344,014,342,229,671,232
  5. Step 5: Solve for x
    x = 344,014,342,229,671,232/579,456,010.40
  6. Step 6: Final answer
    x = 593,685,001.20

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Double scale
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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.