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Finding the Fourth Proportional to 578,670.11, 798,435.60 and 349,264.61

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Solution

The fourth proportional to 578,670.11, 798,435.60 and 349,264.61 is: 481,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,670.11 : 798,435.60 = 349,264.61 : x
  2. Step 2: Convert to fraction form
    578,670.11/798,435.60 = 349,264.61/x
  3. Step 3: Cross multiply
    578,670.11x = 798,435.60 × 349,264.61
  4. Step 4: Simplify right side
    578,670.11x = 278,865,298,444.12
  5. Step 5: Solve for x
    x = 278,865,298,444.12/578,670.11
  6. Step 6: Final answer
    x = 481,907.21

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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.