Home / 661,242.74-911,670.24-428,258.04

Finding the Fourth Proportional to 661,242.74, 911,670.24 and 428,258.04

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Solution

The fourth proportional to 661,242.74, 911,670.24 and 428,258.04 is: 590,448.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,242.74 : 911,670.24 = 428,258.04 : x
  2. Step 2: Convert to fraction form
    661,242.74/911,670.24 = 428,258.04/x
  3. Step 3: Cross multiply
    661,242.74x = 911,670.24 × 428,258.04
  4. Step 4: Simplify right side
    661,242.74x = 390,430,110,108.73
  5. Step 5: Solve for x
    x = 390,430,110,108.73/661,242.74
  6. Step 6: Final answer
    x = 590,448.99

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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.