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Finding the Fourth Proportional to 604,919.80, 907,379.70 and 392,343.40

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Solution

The fourth proportional to 604,919.80, 907,379.70 and 392,343.40 is: 588,515.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,919.80 : 907,379.70 = 392,343.40 : x
  2. Step 2: Convert to fraction form
    604,919.80/907,379.70 = 392,343.40/x
  3. Step 3: Cross multiply
    604,919.80x = 907,379.70 × 392,343.40
  4. Step 4: Simplify right side
    604,919.80x = 356,004,436,588.98
  5. Step 5: Solve for x
    x = 356,004,436,588.98/604,919.80
  6. Step 6: Final answer
    x = 588,515.10

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Similar ratio
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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.