Home / 505,148.20-697,224.18-290,413.02

Finding the Fourth Proportional to 505,148.20, 697,224.18 and 290,413.02

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Solution

The fourth proportional to 505,148.20, 697,224.18 and 290,413.02 is: 400,838.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,148.20 : 697,224.18 = 290,413.02 : x
  2. Step 2: Convert to fraction form
    505,148.20/697,224.18 = 290,413.02/x
  3. Step 3: Cross multiply
    505,148.20x = 697,224.18 × 290,413.02
  4. Step 4: Simplify right side
    505,148.20x = 202,482,979,730.82
  5. Step 5: Solve for x
    x = 202,482,979,730.82/505,148.20
  6. Step 6: Final answer
    x = 400,838.76

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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.