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Finding the Fourth Proportional to 534,140.40, 799,655.40 and 518,588.40

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Solution

The fourth proportional to 534,140.40, 799,655.40 and 518,588.40 is: 776,372.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,140.40 : 799,655.40 = 518,588.40 : x
  2. Step 2: Convert to fraction form
    534,140.40/799,655.40 = 518,588.40/x
  3. Step 3: Cross multiply
    534,140.40x = 799,655.40 × 518,588.40
  4. Step 4: Simplify right side
    534,140.40x = 414,692,014,437.36
  5. Step 5: Solve for x
    x = 414,692,014,437.36/534,140.40
  6. Step 6: Final answer
    x = 776,372.68

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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.