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Finding the Fourth Proportional to 459,281.60, 689,440.80 and 354,564.80

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Solution

The fourth proportional to 459,281.60, 689,440.80 and 354,564.80 is: 532,247.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,281.60 : 689,440.80 = 354,564.80 : x
  2. Step 2: Convert to fraction form
    459,281.60/689,440.80 = 354,564.80/x
  3. Step 3: Cross multiply
    459,281.60x = 689,440.80 × 354,564.80
  4. Step 4: Simplify right side
    459,281.60x = 244,451,439,363.84
  5. Step 5: Solve for x
    x = 244,451,439,363.84/459,281.60
  6. Step 6: Final answer
    x = 532,247.40

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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.