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Finding the Fourth Proportional to 878,167.64, 1,211,894.98 and 496,185.64

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Solution

The fourth proportional to 878,167.64, 1,211,894.98 and 496,185.64 is: 684,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,167.64 : 1,211,894.98 = 496,185.64 : x
  2. Step 2: Convert to fraction form
    878,167.64/1,211,894.98 = 496,185.64/x
  3. Step 3: Cross multiply
    878,167.64x = 1,211,894.98 × 496,185.64
  4. Step 4: Simplify right side
    878,167.64x = 601,324,886,264.09
  5. Step 5: Solve for x
    x = 601,324,886,264.09/878,167.64
  6. Step 6: Final answer
    x = 684,749.54

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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.