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Finding the Fourth Proportional to 640,567.30, 960,413.55 and 303,769.30

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Solution

The fourth proportional to 640,567.30, 960,413.55 and 303,769.30 is: 455,446.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,567.30 : 960,413.55 = 303,769.30 : x
  2. Step 2: Convert to fraction form
    640,567.30/960,413.55 = 303,769.30/x
  3. Step 3: Cross multiply
    640,567.30x = 960,413.55 × 303,769.30
  4. Step 4: Simplify right side
    640,567.30x = 291,744,151,794.02
  5. Step 5: Solve for x
    x = 291,744,151,794.02/640,567.30
  6. Step 6: Final answer
    x = 455,446.53

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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.