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Finding the Fourth Proportional to 678,086.52, 935,803.12 and 376,280.52

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Solution

The fourth proportional to 678,086.52, 935,803.12 and 376,280.52 is: 519,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,086.52 : 935,803.12 = 376,280.52 : x
  2. Step 2: Convert to fraction form
    678,086.52/935,803.12 = 376,280.52/x
  3. Step 3: Cross multiply
    678,086.52x = 935,803.12 × 376,280.52
  4. Step 4: Simplify right side
    678,086.52x = 352,124,484,611.22
  5. Step 5: Solve for x
    x = 352,124,484,611.22/678,086.52
  6. Step 6: Final answer
    x = 519,291.38

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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.