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Finding the Fourth Proportional to 578,859.86, 798,387.30 and 507,115.34

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Solution

The fourth proportional to 578,859.86, 798,387.30 and 507,115.34 is: 699,434.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,859.86 : 798,387.30 = 507,115.34 : x
  2. Step 2: Convert to fraction form
    578,859.86/798,387.30 = 507,115.34/x
  3. Step 3: Cross multiply
    578,859.86x = 798,387.30 × 507,115.34
  4. Step 4: Simplify right side
    578,859.86x = 404,874,447,091.18
  5. Step 5: Solve for x
    x = 404,874,447,091.18/578,859.86
  6. Step 6: Final answer
    x = 699,434.31

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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.