Home / 459,021.60-688,532.40-427,528.80

Finding the Fourth Proportional to 459,021.60, 688,532.40 and 427,528.80

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Solution

The fourth proportional to 459,021.60, 688,532.40 and 427,528.80 is: 641,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,021.60 : 688,532.40 = 427,528.80 : x
  2. Step 2: Convert to fraction form
    459,021.60/688,532.40 = 427,528.80/x
  3. Step 3: Cross multiply
    459,021.60x = 688,532.40 × 427,528.80
  4. Step 4: Simplify right side
    459,021.60x = 294,367,430,733.12
  5. Step 5: Solve for x
    x = 294,367,430,733.12/459,021.60
  6. Step 6: Final answer
    x = 641,293.20

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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.