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Finding the Fourth Proportional to 653,658.90, 980,836.65 and 254,312.70

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Solution

The fourth proportional to 653,658.90, 980,836.65 and 254,312.70 is: 381,604.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,658.90 : 980,836.65 = 254,312.70 : x
  2. Step 2: Convert to fraction form
    653,658.90/980,836.65 = 254,312.70/x
  3. Step 3: Cross multiply
    653,658.90x = 980,836.65 × 254,312.70
  4. Step 4: Simplify right side
    653,658.90x = 249,439,216,720.46
  5. Step 5: Solve for x
    x = 249,439,216,720.46/653,658.90
  6. Step 6: Final answer
    x = 381,604.56

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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.