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Finding the Fourth Proportional to 578,328.32, 798,118.02 and 320,205.26

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Solution

The fourth proportional to 578,328.32, 798,118.02 and 320,205.26 is: 441,897.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,328.32 : 798,118.02 = 320,205.26 : x
  2. Step 2: Convert to fraction form
    578,328.32/798,118.02 = 320,205.26/x
  3. Step 3: Cross multiply
    578,328.32x = 798,118.02 × 320,205.26
  4. Step 4: Simplify right side
    578,328.32x = 255,561,590,100.08
  5. Step 5: Solve for x
    x = 255,561,590,100.08/578,328.32
  6. Step 6: Final answer
    x = 441,897.07

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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.