Home / 386,723.10-578,444.40-347,029.05

Finding the Fourth Proportional to 386,723.10, 578,444.40 and 347,029.05

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Solution

The fourth proportional to 386,723.10, 578,444.40 and 347,029.05 is: 519,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,723.10 : 578,444.40 = 347,029.05 : x
  2. Step 2: Convert to fraction form
    386,723.10/578,444.40 = 347,029.05/x
  3. Step 3: Cross multiply
    386,723.10x = 578,444.40 × 347,029.05
  4. Step 4: Simplify right side
    386,723.10x = 200,737,010,609.82
  5. Step 5: Solve for x
    x = 200,737,010,609.82/386,723.10
  6. Step 6: Final answer
    x = 519,071.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.