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Finding the Fourth Proportional to 617,328.15, 864,849.90 and 617,328.15

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Solution

The fourth proportional to 617,328.15, 864,849.90 and 617,328.15 is: 864,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,328.15 : 864,849.90 = 617,328.15 : x
  2. Step 2: Convert to fraction form
    617,328.15/864,849.90 = 617,328.15/x
  3. Step 3: Cross multiply
    617,328.15x = 864,849.90 × 617,328.15
  4. Step 4: Simplify right side
    617,328.15x = 533,896,188,794.69
  5. Step 5: Solve for x
    x = 533,896,188,794.69/617,328.15
  6. Step 6: Final answer
    x = 864,849.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.