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Finding the Fourth Proportional to 570,613.78, 787,447.02 and 315,965.08

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Solution

The fourth proportional to 570,613.78, 787,447.02 and 315,965.08 is: 436,031.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,613.78 : 787,447.02 = 315,965.08 : x
  2. Step 2: Convert to fraction form
    570,613.78/787,447.02 = 315,965.08/x
  3. Step 3: Cross multiply
    570,613.78x = 787,447.02 × 315,965.08
  4. Step 4: Simplify right side
    570,613.78x = 248,805,760,670.06
  5. Step 5: Solve for x
    x = 248,805,760,670.06/570,613.78
  6. Step 6: Final answer
    x = 436,031.81

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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.