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Finding the Fourth Proportional to 570,076.11, 786,694.67 and 315,427.30

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Solution

The fourth proportional to 570,076.11, 786,694.67 and 315,427.30 is: 435,283.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,076.11 : 786,694.67 = 315,427.30 : x
  2. Step 2: Convert to fraction form
    570,076.11/786,694.67 = 315,427.30/x
  3. Step 3: Cross multiply
    570,076.11x = 786,694.67 × 315,427.30
  4. Step 4: Simplify right side
    570,076.11x = 248,144,975,682.49
  5. Step 5: Solve for x
    x = 248,144,975,682.49/570,076.11
  6. Step 6: Final answer
    x = 435,283.94

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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.