Home / 515,540,071.10-711,445,258.64-280,592,416.14

Finding the Fourth Proportional to 515,540,071.10, 711,445,258.64 and 280,592,416.14

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Solution

The fourth proportional to 515,540,071.10, 711,445,258.64 and 280,592,416.14 is: 387,217,512.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,540,071.10 : 711,445,258.64 = 280,592,416.14 : x
  2. Step 2: Convert to fraction form
    515,540,071.10/711,445,258.64 = 280,592,416.14/x
  3. Step 3: Cross multiply
    515,540,071.10x = 711,445,258.64 × 280,592,416.14
  4. Step 4: Simplify right side
    515,540,071.10x = 199,626,144,073,144,800
  5. Step 5: Solve for x
    x = 199,626,144,073,144,800/515,540,071.10
  6. Step 6: Final answer
    x = 387,217,512.79

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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.