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Finding the Fourth Proportional to 570,887.59, 787,791.01 and 312,712.93

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Solution

The fourth proportional to 570,887.59, 787,791.01 and 312,712.93 is: 431,525.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,887.59 : 787,791.01 = 312,712.93 : x
  2. Step 2: Convert to fraction form
    570,887.59/787,791.01 = 312,712.93/x
  3. Step 3: Cross multiply
    570,887.59x = 787,791.01 × 312,712.93
  4. Step 4: Simplify right side
    570,887.59x = 246,352,429,462.24
  5. Step 5: Solve for x
    x = 246,352,429,462.24/570,887.59
  6. Step 6: Final answer
    x = 431,525.28

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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.