Home / 387,080,569.60-580,670,620.80-193,091,142.40

Finding the Fourth Proportional to 387,080,569.60, 580,670,620.80 and 193,091,142.40

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Solution

The fourth proportional to 387,080,569.60, 580,670,620.80 and 193,091,142.40 is: 289,661,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,080,569.60 : 580,670,620.80 = 193,091,142.40 : x
  2. Step 2: Convert to fraction form
    387,080,569.60/580,670,620.80 = 193,091,142.40/x
  3. Step 3: Cross multiply
    387,080,569.60x = 580,670,620.80 × 193,091,142.40
  4. Step 4: Simplify right side
    387,080,569.60x = 112,122,353,528,389,200
  5. Step 5: Solve for x
    x = 112,122,353,528,389,200/387,080,569.60
  6. Step 6: Final answer
    x = 289,661,539.05

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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.