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Finding the Fourth Proportional to 524,817.60, 787,420.80 and 209,500.80

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Solution

The fourth proportional to 524,817.60, 787,420.80 and 209,500.80 is: 314,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,817.60 : 787,420.80 = 209,500.80 : x
  2. Step 2: Convert to fraction form
    524,817.60/787,420.80 = 209,500.80/x
  3. Step 3: Cross multiply
    524,817.60x = 787,420.80 × 209,500.80
  4. Step 4: Simplify right side
    524,817.60x = 164,965,287,536.64
  5. Step 5: Solve for x
    x = 164,965,287,536.64/524,817.60
  6. Step 6: Final answer
    x = 314,328.80

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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.