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Finding the Fourth Proportional to 677,208.57, 934,558.38 and 371,312.88

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Solution

The fourth proportional to 677,208.57, 934,558.38 and 371,312.88 is: 512,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,208.57 : 934,558.38 = 371,312.88 : x
  2. Step 2: Convert to fraction form
    677,208.57/934,558.38 = 371,312.88/x
  3. Step 3: Cross multiply
    677,208.57x = 934,558.38 × 371,312.88
  4. Step 4: Simplify right side
    677,208.57x = 347,013,563,605.93
  5. Step 5: Solve for x
    x = 347,013,563,605.93/677,208.57
  6. Step 6: Final answer
    x = 512,417.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.