Home / 438,980,733.66-658,407,004.62-128,004,784.80

Finding the Fourth Proportional to 438,980,733.66, 658,407,004.62 and 128,004,784.80

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Solution

The fourth proportional to 438,980,733.66, 658,407,004.62 and 128,004,784.80 is: 191,988,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,980,733.66 : 658,407,004.62 = 128,004,784.80 : x
  2. Step 2: Convert to fraction form
    438,980,733.66/658,407,004.62 = 128,004,784.80/x
  3. Step 3: Cross multiply
    438,980,733.66x = 658,407,004.62 × 128,004,784.80
  4. Step 4: Simplify right side
    438,980,733.66x = 84,279,246,937,195,712
  5. Step 5: Solve for x
    x = 84,279,246,937,195,712/438,980,733.66
  6. Step 6: Final answer
    x = 191,988,487.14

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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.