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Finding the Fourth Proportional to 649,919.80, 974,490.90 and 334,991.80

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Solution

The fourth proportional to 649,919.80, 974,490.90 and 334,991.80 is: 502,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,919.80 : 974,490.90 = 334,991.80 : x
  2. Step 2: Convert to fraction form
    649,919.80/974,490.90 = 334,991.80/x
  3. Step 3: Cross multiply
    649,919.80x = 974,490.90 × 334,991.80
  4. Step 4: Simplify right side
    649,919.80x = 326,446,460,674.62
  5. Step 5: Solve for x
    x = 326,446,460,674.62/649,919.80
  6. Step 6: Final answer
    x = 502,287.30

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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.