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Finding the Fourth Proportional to 425,523.40, 638,285.10 and 384,051.40

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Solution

The fourth proportional to 425,523.40, 638,285.10 and 384,051.40 is: 576,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,523.40 : 638,285.10 = 384,051.40 : x
  2. Step 2: Convert to fraction form
    425,523.40/638,285.10 = 384,051.40/x
  3. Step 3: Cross multiply
    425,523.40x = 638,285.10 × 384,051.40
  4. Step 4: Simplify right side
    425,523.40x = 245,134,286,254.14
  5. Step 5: Solve for x
    x = 245,134,286,254.14/425,523.40
  6. Step 6: Final answer
    x = 576,077.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.