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Finding the Fourth Proportional to 425,311.10, 637,966.65 and 415,469.60

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Solution

The fourth proportional to 425,311.10, 637,966.65 and 415,469.60 is: 623,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,311.10 : 637,966.65 = 415,469.60 : x
  2. Step 2: Convert to fraction form
    425,311.10/637,966.65 = 415,469.60/x
  3. Step 3: Cross multiply
    425,311.10x = 637,966.65 × 415,469.60
  4. Step 4: Simplify right side
    425,311.10x = 265,055,748,888.84
  5. Step 5: Solve for x
    x = 265,055,748,888.84/425,311.10
  6. Step 6: Final answer
    x = 623,204.40

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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.