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Finding the Fourth Proportional to 397,404.87, 549,862.83 and 346,523.70

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Solution

The fourth proportional to 397,404.87, 549,862.83 and 346,523.70 is: 479,461.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,404.87 : 549,862.83 = 346,523.70 : x
  2. Step 2: Convert to fraction form
    397,404.87/549,862.83 = 346,523.70/x
  3. Step 3: Cross multiply
    397,404.87x = 549,862.83 × 346,523.70
  4. Step 4: Simplify right side
    397,404.87x = 190,540,502,344.07
  5. Step 5: Solve for x
    x = 190,540,502,344.07/397,404.87
  6. Step 6: Final answer
    x = 479,461.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.