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Finding the Fourth Proportional to 491,702.77, 678,570.75 and 273,911.18

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Solution

The fourth proportional to 491,702.77, 678,570.75 and 273,911.18 is: 378,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,702.77 : 678,570.75 = 273,911.18 : x
  2. Step 2: Convert to fraction form
    491,702.77/678,570.75 = 273,911.18/x
  3. Step 3: Cross multiply
    491,702.77x = 678,570.75 × 273,911.18
  4. Step 4: Simplify right side
    491,702.77x = 185,868,111,955.08
  5. Step 5: Solve for x
    x = 185,868,111,955.08/491,702.77
  6. Step 6: Final answer
    x = 378,009.08

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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.