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Finding the Fourth Proportional to 439,878.20, 659,817.30 and 334,902.20

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Solution

The fourth proportional to 439,878.20, 659,817.30 and 334,902.20 is: 502,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,878.20 : 659,817.30 = 334,902.20 : x
  2. Step 2: Convert to fraction form
    439,878.20/659,817.30 = 334,902.20/x
  3. Step 3: Cross multiply
    439,878.20x = 659,817.30 × 334,902.20
  4. Step 4: Simplify right side
    439,878.20x = 220,974,265,368.06
  5. Step 5: Solve for x
    x = 220,974,265,368.06/439,878.20
  6. Step 6: Final answer
    x = 502,353.30

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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.