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Finding the Fourth Proportional to 534,379.20, 801,698.40 and 376,915.20

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Solution

The fourth proportional to 534,379.20, 801,698.40 and 376,915.20 is: 565,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,379.20 : 801,698.40 = 376,915.20 : x
  2. Step 2: Convert to fraction form
    534,379.20/801,698.40 = 376,915.20/x
  3. Step 3: Cross multiply
    534,379.20x = 801,698.40 × 376,915.20
  4. Step 4: Simplify right side
    534,379.20x = 302,172,312,775.68
  5. Step 5: Solve for x
    x = 302,172,312,775.68/534,379.20
  6. Step 6: Final answer
    x = 565,464.21

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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.