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Finding the Fourth Proportional to 415,909.30, 620,855.35 and 365,464.10

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Solution

The fourth proportional to 415,909.30, 620,855.35 and 365,464.10 is: 545,552.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,909.30 : 620,855.35 = 365,464.10 : x
  2. Step 2: Convert to fraction form
    415,909.30/620,855.35 = 365,464.10/x
  3. Step 3: Cross multiply
    415,909.30x = 620,855.35 × 365,464.10
  4. Step 4: Simplify right side
    415,909.30x = 226,900,339,890.61
  5. Step 5: Solve for x
    x = 226,900,339,890.61/415,909.30
  6. Step 6: Final answer
    x = 545,552.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.