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Finding the Fourth Proportional to 474,717.08, 712,567.70 and 318,040.40

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Solution

The fourth proportional to 474,717.08, 712,567.70 and 318,040.40 is: 477,390.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,717.08 : 712,567.70 = 318,040.40 : x
  2. Step 2: Convert to fraction form
    474,717.08/712,567.70 = 318,040.40/x
  3. Step 3: Cross multiply
    474,717.08x = 712,567.70 × 318,040.40
  4. Step 4: Simplify right side
    474,717.08x = 226,625,314,744.88
  5. Step 5: Solve for x
    x = 226,625,314,744.88/474,717.08
  6. Step 6: Final answer
    x = 477,390.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.