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Finding the Fourth Proportional to 425,543.76, 637,518.60 and 381,726

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Solution

The fourth proportional to 425,543.76, 637,518.60 and 381,726 is: 571,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,543.76 : 637,518.60 = 381,726 : x
  2. Step 2: Convert to fraction form
    425,543.76/637,518.60 = 381,726/x
  3. Step 3: Cross multiply
    425,543.76x = 637,518.60 × 381,726
  4. Step 4: Simplify right side
    425,543.76x = 243,357,425,103.60
  5. Step 5: Solve for x
    x = 243,357,425,103.60/425,543.76
  6. Step 6: Final answer
    x = 571,874.03

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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.