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Finding the Fourth Proportional to 425,205.60, 637,808.40 and 325,672.80

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Solution

The fourth proportional to 425,205.60, 637,808.40 and 325,672.80 is: 488,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,205.60 : 637,808.40 = 325,672.80 : x
  2. Step 2: Convert to fraction form
    425,205.60/637,808.40 = 325,672.80/x
  3. Step 3: Cross multiply
    425,205.60x = 637,808.40 × 325,672.80
  4. Step 4: Simplify right side
    425,205.60x = 207,716,847,491.52
  5. Step 5: Solve for x
    x = 207,716,847,491.52/425,205.60
  6. Step 6: Final answer
    x = 488,509.20

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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.