Home / 386,988,783.12-534,056,786.76-210,782,105.52

Finding the Fourth Proportional to 386,988,783.12, 534,056,786.76 and 210,782,105.52

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Solution

The fourth proportional to 386,988,783.12, 534,056,786.76 and 210,782,105.52 is: 290,885,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,988,783.12 : 534,056,786.76 = 210,782,105.52 : x
  2. Step 2: Convert to fraction form
    386,988,783.12/534,056,786.76 = 210,782,105.52/x
  3. Step 3: Cross multiply
    386,988,783.12x = 534,056,786.76 × 210,782,105.52
  4. Step 4: Simplify right side
    386,988,783.12x = 112,569,613,980,518,464
  5. Step 5: Solve for x
    x = 112,569,613,980,518,464/386,988,783.12
  6. Step 6: Final answer
    x = 290,885,986.60

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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.