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Finding the Fourth Proportional to 423,548.34, 638,366.91 and 365,089.56

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Solution

The fourth proportional to 423,548.34, 638,366.91 and 365,089.56 is: 550,258.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,548.34 : 638,366.91 = 365,089.56 : x
  2. Step 2: Convert to fraction form
    423,548.34/638,366.91 = 365,089.56/x
  3. Step 3: Cross multiply
    423,548.34x = 638,366.91 × 365,089.56
  4. Step 4: Simplify right side
    423,548.34x = 233,061,094,290.46
  5. Step 5: Solve for x
    x = 233,061,094,290.46/423,548.34
  6. Step 6: Final answer
    x = 550,258.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.