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Finding the Fourth Proportional to 459,004.40, 688,506.60 and 279,378.80

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Solution

The fourth proportional to 459,004.40, 688,506.60 and 279,378.80 is: 419,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,004.40 : 688,506.60 = 279,378.80 : x
  2. Step 2: Convert to fraction form
    459,004.40/688,506.60 = 279,378.80/x
  3. Step 3: Cross multiply
    459,004.40x = 688,506.60 × 279,378.80
  4. Step 4: Simplify right side
    459,004.40x = 192,354,147,700.08
  5. Step 5: Solve for x
    x = 192,354,147,700.08/459,004.40
  6. Step 6: Final answer
    x = 419,068.20

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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.