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Finding the Fourth Proportional to 459,820.60, 689,730.90 and 459,820.60

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Solution

The fourth proportional to 459,820.60, 689,730.90 and 459,820.60 is: 689,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,820.60 : 689,730.90 = 459,820.60 : x
  2. Step 2: Convert to fraction form
    459,820.60/689,730.90 = 459,820.60/x
  3. Step 3: Cross multiply
    459,820.60x = 689,730.90 × 459,820.60
  4. Step 4: Simplify right side
    459,820.60x = 317,152,476,276.54
  5. Step 5: Solve for x
    x = 317,152,476,276.54/459,820.60
  6. Step 6: Final answer
    x = 689,730.90

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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.