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Finding the Fourth Proportional to 526,811.60, 787,884.60 and 442,830.80

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Solution

The fourth proportional to 526,811.60, 787,884.60 and 442,830.80 is: 662,285.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,811.60 : 787,884.60 = 442,830.80 : x
  2. Step 2: Convert to fraction form
    526,811.60/787,884.60 = 442,830.80/x
  3. Step 3: Cross multiply
    526,811.60x = 787,884.60 × 442,830.80
  4. Step 4: Simplify right side
    526,811.60x = 348,899,567,725.68
  5. Step 5: Solve for x
    x = 348,899,567,725.68/526,811.60
  6. Step 6: Final answer
    x = 662,285.28

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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.