Home / 785,772,005.20-1,178,658,007.80-325,557,221.20

Finding the Fourth Proportional to 785,772,005.20, 1,178,658,007.80 and 325,557,221.20

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Solution

The fourth proportional to 785,772,005.20, 1,178,658,007.80 and 325,557,221.20 is: 488,335,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,772,005.20 : 1,178,658,007.80 = 325,557,221.20 : x
  2. Step 2: Convert to fraction form
    785,772,005.20/1,178,658,007.80 = 325,557,221.20/x
  3. Step 3: Cross multiply
    785,772,005.20x = 1,178,658,007.80 × 325,557,221.20
  4. Step 4: Simplify right side
    785,772,005.20x = 383,720,625,764,495,872
  5. Step 5: Solve for x
    x = 383,720,625,764,495,872/785,772,005.20
  6. Step 6: Final answer
    x = 488,335,831.80

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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.