Home / 515,540,066.59-711,445,252.43-280,592,411.63

Finding the Fourth Proportional to 515,540,066.59, 711,445,252.43 and 280,592,411.63

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Solution

The fourth proportional to 515,540,066.59, 711,445,252.43 and 280,592,411.63 is: 387,217,506.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,540,066.59 : 711,445,252.43 = 280,592,411.63 : x
  2. Step 2: Convert to fraction form
    515,540,066.59/711,445,252.43 = 280,592,411.63/x
  3. Step 3: Cross multiply
    515,540,066.59x = 711,445,252.43 × 280,592,411.63
  4. Step 4: Simplify right side
    515,540,066.59x = 199,626,139,120,644,832
  5. Step 5: Solve for x
    x = 199,626,139,120,644,832/515,540,066.59
  6. Step 6: Final answer
    x = 387,217,506.57

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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.