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Finding the Fourth Proportional to 692,024.54, 954,992.30 and 390,216.38

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Solution

The fourth proportional to 692,024.54, 954,992.30 and 390,216.38 is: 538,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,024.54 : 954,992.30 = 390,216.38 : x
  2. Step 2: Convert to fraction form
    692,024.54/954,992.30 = 390,216.38/x
  3. Step 3: Cross multiply
    692,024.54x = 954,992.30 × 390,216.38
  4. Step 4: Simplify right side
    692,024.54x = 372,653,638,233.87
  5. Step 5: Solve for x
    x = 372,653,638,233.87/692,024.54
  6. Step 6: Final answer
    x = 538,497.72

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1.5x scale

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.