Home / 7,138,190,565.30-9,850,924,714.86-3,923,042,215.80

Finding the Fourth Proportional to 7,138,190,565.30, 9,850,924,714.86 and 3,923,042,215.80

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Solution

The fourth proportional to 7,138,190,565.30, 9,850,924,714.86 and 3,923,042,215.80 is: 5,413,920,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138,190,565.30 : 9,850,924,714.86 = 3,923,042,215.80 : x
  2. Step 2: Convert to fraction form
    7,138,190,565.30/9,850,924,714.86 = 3,923,042,215.80/x
  3. Step 3: Cross multiply
    7,138,190,565.30x = 9,850,924,714.86 × 3,923,042,215.80
  4. Step 4: Simplify right side
    7,138,190,565.30x = 38,645,593,521,063,362,560
  5. Step 5: Solve for x
    x = 38,645,593,521,063,362,560/7,138,190,565.30
  6. Step 6: Final answer
    x = 5,413,920,119.89

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Double scale
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1.5x scale

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.