Home / 378,860,734.60-522,827,793.78-205,020,478.60

Finding the Fourth Proportional to 378,860,734.60, 522,827,793.78 and 205,020,478.60

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Solution

The fourth proportional to 378,860,734.60, 522,827,793.78 and 205,020,478.60 is: 282,928,249.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,860,734.60 : 522,827,793.78 = 205,020,478.60 : x
  2. Step 2: Convert to fraction form
    378,860,734.60/522,827,793.78 = 205,020,478.60/x
  3. Step 3: Cross multiply
    378,860,734.60x = 522,827,793.78 × 205,020,478.60
  4. Step 4: Simplify right side
    378,860,734.60x = 107,190,404,506,157,696
  5. Step 5: Solve for x
    x = 107,190,404,506,157,696/378,860,734.60
  6. Step 6: Final answer
    x = 282,928,249.66

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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.