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Finding the Fourth Proportional to 626,945.64, 865,449.84 and 423,272.46

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Solution

The fourth proportional to 626,945.64, 865,449.84 and 423,272.46 is: 584,294.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,945.64 : 865,449.84 = 423,272.46 : x
  2. Step 2: Convert to fraction form
    626,945.64/865,449.84 = 423,272.46/x
  3. Step 3: Cross multiply
    626,945.64x = 865,449.84 × 423,272.46
  4. Step 4: Simplify right side
    626,945.64x = 366,321,082,783.41
  5. Step 5: Solve for x
    x = 366,321,082,783.41/626,945.64
  6. Step 6: Final answer
    x = 584,294.81

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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.