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Finding the Fourth Proportional to 558,071.20, 770,117.20 and 303,413.60

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Solution

The fourth proportional to 558,071.20, 770,117.20 and 303,413.60 is: 418,699.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,071.20 : 770,117.20 = 303,413.60 : x
  2. Step 2: Convert to fraction form
    558,071.20/770,117.20 = 303,413.60/x
  3. Step 3: Cross multiply
    558,071.20x = 770,117.20 × 303,413.60
  4. Step 4: Simplify right side
    558,071.20x = 233,664,032,073.92
  5. Step 5: Solve for x
    x = 233,664,032,073.92/558,071.20
  6. Step 6: Final answer
    x = 418,699.32

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Double scale
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1.5x scale

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.