Home / 520,944.97-781,413.07-407,188.46

Finding the Fourth Proportional to 520,944.97, 781,413.07 and 407,188.46

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Solution

The fourth proportional to 520,944.97, 781,413.07 and 407,188.46 is: 610,779.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,944.97 : 781,413.07 = 407,188.46 : x
  2. Step 2: Convert to fraction form
    520,944.97/781,413.07 = 407,188.46/x
  3. Step 3: Cross multiply
    520,944.97x = 781,413.07 × 407,188.46
  4. Step 4: Simplify right side
    520,944.97x = 318,182,384,597.17
  5. Step 5: Solve for x
    x = 318,182,384,597.17/520,944.97
  6. Step 6: Final answer
    x = 610,779.26

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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.