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Finding the Fourth Proportional to 498,307.18, 687,573.36 and 294,391.30

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Solution

The fourth proportional to 498,307.18, 687,573.36 and 294,391.30 is: 406,206.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,307.18 : 687,573.36 = 294,391.30 : x
  2. Step 2: Convert to fraction form
    498,307.18/687,573.36 = 294,391.30/x
  3. Step 3: Cross multiply
    498,307.18x = 687,573.36 × 294,391.30
  4. Step 4: Simplify right side
    498,307.18x = 202,415,610,385.95
  5. Step 5: Solve for x
    x = 202,415,610,385.95/498,307.18
  6. Step 6: Final answer
    x = 406,206.49

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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.