Home / 508,942.20-763,413.30-485,614.20

Finding the Fourth Proportional to 508,942.20, 763,413.30 and 485,614.20

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Solution

The fourth proportional to 508,942.20, 763,413.30 and 485,614.20 is: 728,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,942.20 : 763,413.30 = 485,614.20 : x
  2. Step 2: Convert to fraction form
    508,942.20/763,413.30 = 485,614.20/x
  3. Step 3: Cross multiply
    508,942.20x = 763,413.30 × 485,614.20
  4. Step 4: Simplify right side
    508,942.20x = 370,724,338,948.86
  5. Step 5: Solve for x
    x = 370,724,338,948.86/508,942.20
  6. Step 6: Final answer
    x = 728,421.30

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Double scale
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Similar ratio
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1.5x scale

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.